./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_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 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:00:30,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:00:30,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:00:30,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:00:30,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:00:30,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:00:30,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:00:30,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:00:30,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:00:30,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:00:30,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:00:30,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:00:30,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:00:30,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:00:30,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:00:30,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:00:30,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:00:30,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:00:30,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:00:30,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:00:30,386 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:00:30,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:00:30,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:00:30,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:00:30,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:00:30,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:00:30,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:00:30,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:00:30,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:00:30,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:00:30,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:00:30,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:00:30,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:00:30,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:00:30,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:00:30,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:00:30,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:00:30,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:00:30,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:00:30,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:00:30,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:00:30,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:00:30,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:00:30,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:00:30,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:00:30,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:00:30,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:00:30,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:00:30,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:00:30,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:00:30,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:00:30,413 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:00:30,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:00:30,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:00:30,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:00:30,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:00:30,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:00:30,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:00:30,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:00:30,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:00:30,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:00:30,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 624e111eb11fc6cb53be17248f0e61e18bd8cc958dfb511134351ecf4f085f78 [2022-07-12 11:00:30,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:00:30,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:00:30,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:00:30,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:00:30,640 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:00:30,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2022-07-12 11:00:30,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884362c6/53c9bf9ec9df4e8fa75cb02799126683/FLAG1f931e89a [2022-07-12 11:00:31,306 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:00:31,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i [2022-07-12 11:00:31,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884362c6/53c9bf9ec9df4e8fa75cb02799126683/FLAG1f931e89a [2022-07-12 11:00:31,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3884362c6/53c9bf9ec9df4e8fa75cb02799126683 [2022-07-12 11:00:31,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:00:31,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:00:31,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:00:31,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:00:31,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:00:31,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:00:31" (1/1) ... [2022-07-12 11:00:31,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f448cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:31, skipping insertion in model container [2022-07-12 11:00:31,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:00:31" (1/1) ... [2022-07-12 11:00:31,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:00:31,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:00:32,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2022-07-12 11:00:32,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2022-07-12 11:00:32,808 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,809 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,810 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:32,822 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,070 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:00:33,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:00:33,071 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:00:33,072 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:00:33,073 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:00:33,074 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:00:33,074 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:00:33,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:00:33,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:00:33,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:00:33,180 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:00:33,257 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,258 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:00:33,364 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:00:33,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4495,4508] [2022-07-12 11:00:33,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_u8_harness.i[4555,4568] [2022-07-12 11:00:33,423 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,425 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,430 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,431 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,431 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,458 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:00:33,458 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:00:33,459 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:00:33,459 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:00:33,460 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:00:33,460 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:00:33,460 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:00:33,461 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:00:33,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:00:33,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:00:33,479 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:00:33,515 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,515 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:00:33,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:00:33,685 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:00:33,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33 WrapperNode [2022-07-12 11:00:33,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:00:33,687 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:00:33,687 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:00:33,687 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:00:33,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,802 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 856 [2022-07-12 11:00:33,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:00:33,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:00:33,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:00:33,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:00:33,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:00:33,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:00:33,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:00:33,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:00:33,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (1/1) ... [2022-07-12 11:00:33,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:00:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:33,908 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) [2022-07-12 11:00:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 11:00:33,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 11:00:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:00:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:00:33,943 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:00:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:00:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:00:33,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:00:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:00:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:00:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:00:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 11:00:33,944 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 11:00:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:00:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:00:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:00:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:00:33,945 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:00:33,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:00:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:00:33,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:00:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 11:00:33,946 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 11:00:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:00:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:00:33,946 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-12 11:00:33,947 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-12 11:00:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:00:33,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:00:33,947 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:00:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:00:33,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:00:33,929 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 [2022-07-12 11:00:34,182 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:00:34,190 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:00:34,864 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:00:34,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:00:34,872 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 11:00:34,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:00:34 BoogieIcfgContainer [2022-07-12 11:00:34,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:00:34,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:00:34,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:00:34,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:00:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:00:31" (1/3) ... [2022-07-12 11:00:34,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ae54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:00:34, skipping insertion in model container [2022-07-12 11:00:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:00:33" (2/3) ... [2022-07-12 11:00:34,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733ae54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:00:34, skipping insertion in model container [2022-07-12 11:00:34,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:00:34" (3/3) ... [2022-07-12 11:00:34,880 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_u8_harness.i [2022-07-12 11:00:34,894 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:00:34,895 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:00:34,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:00:34,945 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6da00195, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21b5d00d [2022-07-12 11:00:34,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:00:34,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 86 states have internal predecessors, (105), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 11:00:34,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 11:00:34,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:34,956 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:34,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1647877052, now seen corresponding path program 1 times [2022-07-12 11:00:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981168164] [2022-07-12 11:00:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:00:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:00:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:00:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:00:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 11:00:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:35,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981168164] [2022-07-12 11:00:35,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981168164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:35,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:35,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:00:35,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629515512] [2022-07-12 11:00:35,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:35,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:00:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:00:35,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:00:35,609 INFO L87 Difference]: Start difference. First operand has 131 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 86 states have internal predecessors, (105), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:35,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:35,841 INFO L93 Difference]: Finished difference Result 258 states and 367 transitions. [2022-07-12 11:00:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:00:35,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2022-07-12 11:00:35,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:35,850 INFO L225 Difference]: With dead ends: 258 [2022-07-12 11:00:35,851 INFO L226 Difference]: Without dead ends: 126 [2022-07-12 11:00:35,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:00:35,862 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 62 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:35,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 189 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:00:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-12 11:00:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-12 11:00:35,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 82 states have internal predecessors, (98), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 11:00:35,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 165 transitions. [2022-07-12 11:00:35,911 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 165 transitions. Word has length 85 [2022-07-12 11:00:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:35,911 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 165 transitions. [2022-07-12 11:00:35,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 165 transitions. [2022-07-12 11:00:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 11:00:35,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:35,921 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:00:35,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -905040328, now seen corresponding path program 1 times [2022-07-12 11:00:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948599280] [2022-07-12 11:00:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:00:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:00:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:00:36,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:00:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:00:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:00:36,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:36,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948599280] [2022-07-12 11:00:36,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948599280] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:36,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019990518] [2022-07-12 11:00:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:36,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:36,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:36,192 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) [2022-07-12 11:00:36,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:00:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:36,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:00:36,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 11:00:36,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:36,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019990518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:36,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:36,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 11:00:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740184613] [2022-07-12 11:00:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:00:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:00:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:00:36,769 INFO L87 Difference]: Start difference. First operand 126 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 11:00:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:36,914 INFO L93 Difference]: Finished difference Result 230 states and 309 transitions. [2022-07-12 11:00:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:00:36,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2022-07-12 11:00:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:36,920 INFO L225 Difference]: With dead ends: 230 [2022-07-12 11:00:36,920 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:00:36,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:00:36,925 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 193 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 468 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:00:36,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:00:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:00:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 85 states have internal predecessors, (100), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2022-07-12 11:00:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 171 transitions. [2022-07-12 11:00:36,947 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 171 transitions. Word has length 85 [2022-07-12 11:00:36,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:36,948 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 171 transitions. [2022-07-12 11:00:36,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 11:00:36,951 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 171 transitions. [2022-07-12 11:00:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 11:00:36,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:36,953 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:36,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:37,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:37,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:37,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1139705187, now seen corresponding path program 1 times [2022-07-12 11:00:37,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:37,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878656998] [2022-07-12 11:00:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:00:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:00:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:00:37,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:37,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878656998] [2022-07-12 11:00:37,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878656998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:37,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607609117] [2022-07-12 11:00:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:37,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:37,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:37,503 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) [2022-07-12 11:00:37,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:00:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:37,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:00:37,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 11:00:38,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:38,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607609117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:38,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:38,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-12 11:00:38,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134089176] [2022-07-12 11:00:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:00:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:00:38,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:00:38,029 INFO L87 Difference]: Start difference. First operand 129 states and 171 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 11:00:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:38,184 INFO L93 Difference]: Finished difference Result 225 states and 300 transitions. [2022-07-12 11:00:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:00:38,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2022-07-12 11:00:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:38,187 INFO L225 Difference]: With dead ends: 225 [2022-07-12 11:00:38,187 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 11:00:38,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:00:38,190 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 209 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:38,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 471 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:00:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 11:00:38,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-12 11:00:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 85 states have internal predecessors, (100), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-12 11:00:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 170 transitions. [2022-07-12 11:00:38,213 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 170 transitions. Word has length 91 [2022-07-12 11:00:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:38,213 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 170 transitions. [2022-07-12 11:00:38,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 11:00:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 170 transitions. [2022-07-12 11:00:38,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 11:00:38,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:38,214 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2022-07-12 11:00:38,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 11:00:38,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 11:00:38,428 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash 928728782, now seen corresponding path program 2 times [2022-07-12 11:00:38,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:38,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508585129] [2022-07-12 11:00:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:38,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:00:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:00:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:00:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:00:38,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:38,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508585129] [2022-07-12 11:00:38,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508585129] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:38,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951536526] [2022-07-12 11:00:38,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:00:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:38,776 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) [2022-07-12 11:00:38,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:00:39,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:00:39,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:39,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 11:00:39,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:00:39,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:39,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951536526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:39,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:39,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-12 11:00:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987452673] [2022-07-12 11:00:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:00:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:00:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:00:39,568 INFO L87 Difference]: Start difference. First operand 129 states and 170 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 11:00:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:39,735 INFO L93 Difference]: Finished difference Result 220 states and 291 transitions. [2022-07-12 11:00:39,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:00:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 97 [2022-07-12 11:00:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:39,739 INFO L225 Difference]: With dead ends: 220 [2022-07-12 11:00:39,739 INFO L226 Difference]: Without dead ends: 126 [2022-07-12 11:00:39,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:00:39,742 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 79 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:39,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 890 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:00:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-12 11:00:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-12 11:00:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 82 states have internal predecessors, (97), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-12 11:00:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 164 transitions. [2022-07-12 11:00:39,753 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 164 transitions. Word has length 97 [2022-07-12 11:00:39,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:39,755 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 164 transitions. [2022-07-12 11:00:39,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 11:00:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 164 transitions. [2022-07-12 11:00:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 11:00:39,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:39,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:39,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:39,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1868612388, now seen corresponding path program 1 times [2022-07-12 11:00:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:39,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485061715] [2022-07-12 11:00:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:39,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:00:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:00:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:00:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 11:00:40,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:40,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485061715] [2022-07-12 11:00:40,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485061715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:40,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:00:40,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:00:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482423988] [2022-07-12 11:00:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:00:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:00:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:00:40,261 INFO L87 Difference]: Start difference. First operand 126 states and 164 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:00:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:40,705 INFO L93 Difference]: Finished difference Result 138 states and 181 transitions. [2022-07-12 11:00:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:00:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2022-07-12 11:00:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:40,707 INFO L225 Difference]: With dead ends: 138 [2022-07-12 11:00:40,707 INFO L226 Difference]: Without dead ends: 136 [2022-07-12 11:00:40,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:00:40,707 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 88 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:40,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 516 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:00:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-12 11:00:40,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2022-07-12 11:00:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 87 states have (on average 1.1839080459770115) internal successors, (103), 89 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 11:00:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2022-07-12 11:00:40,713 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 109 [2022-07-12 11:00:40,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:40,714 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2022-07-12 11:00:40,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:00:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2022-07-12 11:00:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 11:00:40,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:40,715 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:40,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 11:00:40,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash 581206572, now seen corresponding path program 1 times [2022-07-12 11:00:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:40,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705775140] [2022-07-12 11:00:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:40,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:00:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:00:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:00:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:00:41,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:41,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705775140] [2022-07-12 11:00:41,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705775140] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:41,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319082059] [2022-07-12 11:00:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:41,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:41,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:41,112 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) [2022-07-12 11:00:41,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:00:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:41,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:00:41,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-12 11:00:41,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:41,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319082059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:41,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:41,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-07-12 11:00:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006260405] [2022-07-12 11:00:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:00:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:00:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:00:41,656 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:00:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:41,787 INFO L93 Difference]: Finished difference Result 263 states and 366 transitions. [2022-07-12 11:00:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:00:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 113 [2022-07-12 11:00:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:41,788 INFO L225 Difference]: With dead ends: 263 [2022-07-12 11:00:41,788 INFO L226 Difference]: Without dead ends: 153 [2022-07-12 11:00:41,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:00:41,789 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 40 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:41,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 556 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-07-12 11:00:41,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-12 11:00:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2022-07-12 11:00:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 94 states have internal predecessors, (110), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 11:00:41,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2022-07-12 11:00:41,796 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 113 [2022-07-12 11:00:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:41,796 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2022-07-12 11:00:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:00:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2022-07-12 11:00:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 11:00:41,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:41,797 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:41,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:42,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash 839372010, now seen corresponding path program 1 times [2022-07-12 11:00:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:42,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634334981] [2022-07-12 11:00:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:42,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:00:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:00:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:00:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-12 11:00:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:42,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634334981] [2022-07-12 11:00:42,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634334981] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:42,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036230026] [2022-07-12 11:00:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:42,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:42,373 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) [2022-07-12 11:00:42,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:00:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:42,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 11:00:42,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:42,903 INFO L390 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 [2022-07-12 11:00:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 11:00:43,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:43,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036230026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:43,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:43,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-12 11:00:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546534661] [2022-07-12 11:00:43,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:43,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:00:43,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:00:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:00:43,115 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 11:00:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:43,167 INFO L93 Difference]: Finished difference Result 278 states and 369 transitions. [2022-07-12 11:00:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:00:43,168 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 113 [2022-07-12 11:00:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:43,169 INFO L225 Difference]: With dead ends: 278 [2022-07-12 11:00:43,169 INFO L226 Difference]: Without dead ends: 159 [2022-07-12 11:00:43,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:00:43,170 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 25 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:43,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1021 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 81 Unchecked, 0.0s Time] [2022-07-12 11:00:43,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-12 11:00:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-12 11:00:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 110 states have (on average 1.209090909090909) internal successors, (133), 112 states have internal predecessors, (133), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 11:00:43,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2022-07-12 11:00:43,176 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 113 [2022-07-12 11:00:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:43,176 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2022-07-12 11:00:43,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 11:00:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2022-07-12 11:00:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 11:00:43,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:43,178 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:43,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:43,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:43,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:43,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -218466068, now seen corresponding path program 1 times [2022-07-12 11:00:43,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:43,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483794025] [2022-07-12 11:00:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:43,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:00:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:00:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:00:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:00:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:00:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 11:00:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-12 11:00:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483794025] [2022-07-12 11:00:43,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483794025] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:43,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493586053] [2022-07-12 11:00:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:43,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:43,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:43,544 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) [2022-07-12 11:00:43,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:00:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:43,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:00:43,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:43,960 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 11:00:43,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:43,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493586053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:43,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:43,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 11:00:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564057796] [2022-07-12 11:00:43,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:43,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:00:43,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:43,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:00:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:00:43,961 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:43,980 INFO L93 Difference]: Finished difference Result 287 states and 387 transitions. [2022-07-12 11:00:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:00:43,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-07-12 11:00:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:43,982 INFO L225 Difference]: With dead ends: 287 [2022-07-12 11:00:43,982 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 11:00:43,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:00:43,983 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 20 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 484 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 [2022-07-12 11:00:43,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 484 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:00:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 11:00:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 151. [2022-07-12 11:00:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 35 states have call successors, (35), 12 states have call predecessors, (35), 12 states have return successors, (39), 34 states have call predecessors, (39), 34 states have call successors, (39) [2022-07-12 11:00:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 198 transitions. [2022-07-12 11:00:43,994 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 198 transitions. Word has length 113 [2022-07-12 11:00:43,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:43,995 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 198 transitions. [2022-07-12 11:00:43,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:43,995 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 198 transitions. [2022-07-12 11:00:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 11:00:43,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:43,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:44,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:44,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1302315312, now seen corresponding path program 2 times [2022-07-12 11:00:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:44,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247204929] [2022-07-12 11:00:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 11:00:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:00:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 11:00:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:00:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:00:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:00:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:00:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 11:00:44,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247204929] [2022-07-12 11:00:44,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247204929] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132594524] [2022-07-12 11:00:44,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:00:44,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:44,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:44,438 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) [2022-07-12 11:00:44,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:00:45,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:00:45,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:45,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 11:00:45,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 90 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 11:00:45,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:46,348 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:00:46,349 INFO L390 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 [2022-07-12 11:00:46,355 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 11:00:46,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 11:00:46,381 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 11:00:46,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132594524] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:00:46,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:00:46,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 28 [2022-07-12 11:00:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472494180] [2022-07-12 11:00:46,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:46,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:00:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:00:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:00:46,385 INFO L87 Difference]: Start difference. First operand 151 states and 198 transitions. Second operand has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2022-07-12 11:00:48,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:48,316 INFO L93 Difference]: Finished difference Result 347 states and 472 transitions. [2022-07-12 11:00:48,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-12 11:00:48,317 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 117 [2022-07-12 11:00:48,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:48,320 INFO L225 Difference]: With dead ends: 347 [2022-07-12 11:00:48,320 INFO L226 Difference]: Without dead ends: 228 [2022-07-12 11:00:48,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 235 SyntacticMatches, 10 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=512, Invalid=3520, Unknown=0, NotChecked=0, Total=4032 [2022-07-12 11:00:48,323 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 265 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 2525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:48,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 911 Invalid, 2525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2034 Invalid, 0 Unknown, 411 Unchecked, 1.1s Time] [2022-07-12 11:00:48,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-12 11:00:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 200. [2022-07-12 11:00:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 142 states have (on average 1.204225352112676) internal successors, (171), 145 states have internal predecessors, (171), 41 states have call successors, (41), 15 states have call predecessors, (41), 16 states have return successors, (52), 39 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-12 11:00:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 264 transitions. [2022-07-12 11:00:48,335 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 264 transitions. Word has length 117 [2022-07-12 11:00:48,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:48,336 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 264 transitions. [2022-07-12 11:00:48,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.2592592592592595) internal successors, (115), 25 states have internal predecessors, (115), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2022-07-12 11:00:48,336 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 264 transitions. [2022-07-12 11:00:48,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 11:00:48,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:48,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:48,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:48,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:48,551 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1210158377, now seen corresponding path program 1 times [2022-07-12 11:00:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:48,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533056753] [2022-07-12 11:00:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:00:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:00:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 11:00:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533056753] [2022-07-12 11:00:48,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533056753] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856220629] [2022-07-12 11:00:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:48,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:48,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:48,772 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) [2022-07-12 11:00:48,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:00:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:00:49,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-12 11:00:49,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:49,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856220629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:49,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:49,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 11:00:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903188349] [2022-07-12 11:00:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:49,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:00:49,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:49,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:00:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:00:49,160 INFO L87 Difference]: Start difference. First operand 200 states and 264 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:49,178 INFO L93 Difference]: Finished difference Result 381 states and 514 transitions. [2022-07-12 11:00:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:00:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-12 11:00:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:49,180 INFO L225 Difference]: With dead ends: 381 [2022-07-12 11:00:49,180 INFO L226 Difference]: Without dead ends: 211 [2022-07-12 11:00:49,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:00:49,181 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 9 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:49,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 477 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:00:49,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-12 11:00:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2022-07-12 11:00:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 144 states have (on average 1.1875) internal successors, (171), 147 states have internal predecessors, (171), 41 states have call successors, (41), 15 states have call predecessors, (41), 16 states have return successors, (52), 39 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-12 11:00:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2022-07-12 11:00:49,189 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 119 [2022-07-12 11:00:49,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:49,189 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2022-07-12 11:00:49,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2022-07-12 11:00:49,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 11:00:49,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:49,190 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-12 11:00:49,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 11:00:49,396 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:49,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:49,396 INFO L85 PathProgramCache]: Analyzing trace with hash -101760997, now seen corresponding path program 1 times [2022-07-12 11:00:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:49,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865221607] [2022-07-12 11:00:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:49,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:00:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:00:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 11:00:49,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865221607] [2022-07-12 11:00:49,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865221607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:49,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931501109] [2022-07-12 11:00:49,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:49,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:49,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:49,551 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) [2022-07-12 11:00:49,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:00:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:49,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:00:49,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-12 11:00:49,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931501109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:49,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:49,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 11:00:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491203170] [2022-07-12 11:00:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:00:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:00:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:00:49,929 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:49,949 INFO L93 Difference]: Finished difference Result 388 states and 526 transitions. [2022-07-12 11:00:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:00:49,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-12 11:00:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:49,957 INFO L225 Difference]: With dead ends: 388 [2022-07-12 11:00:49,957 INFO L226 Difference]: Without dead ends: 216 [2022-07-12 11:00:49,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:00:49,959 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 34 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:49,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 475 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:00:49,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-12 11:00:49,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 198. [2022-07-12 11:00:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 143 states have internal predecessors, (163), 41 states have call successors, (41), 15 states have call predecessors, (41), 16 states have return successors, (52), 39 states have call predecessors, (52), 40 states have call successors, (52) [2022-07-12 11:00:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 256 transitions. [2022-07-12 11:00:49,972 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 256 transitions. Word has length 119 [2022-07-12 11:00:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:49,972 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 256 transitions. [2022-07-12 11:00:49,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:00:49,972 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 256 transitions. [2022-07-12 11:00:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 11:00:49,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:49,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:00:49,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:50,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -688037219, now seen corresponding path program 2 times [2022-07-12 11:00:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631321791] [2022-07-12 11:00:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:00:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:00:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:00:50,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:50,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631321791] [2022-07-12 11:00:50,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631321791] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:50,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346228621] [2022-07-12 11:00:50,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:00:50,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:50,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:50,547 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) [2022-07-12 11:00:50,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:00:51,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:00:51,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:51,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 11:00:51,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 88 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 11:00:52,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:52,421 INFO L390 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 [2022-07-12 11:00:52,503 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:00:52,504 INFO L390 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 [2022-07-12 11:00:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 11:00:52,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346228621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:00:52,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:00:52,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 13] total 31 [2022-07-12 11:00:52,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250664699] [2022-07-12 11:00:52,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:52,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 11:00:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 11:00:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=819, Unknown=0, NotChecked=0, Total=930 [2022-07-12 11:00:52,527 INFO L87 Difference]: Start difference. First operand 198 states and 256 transitions. Second operand has 31 states, 30 states have (on average 4.266666666666667) internal successors, (128), 28 states have internal predecessors, (128), 8 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-12 11:00:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:55,145 INFO L93 Difference]: Finished difference Result 419 states and 561 transitions. [2022-07-12 11:00:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 11:00:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.266666666666667) internal successors, (128), 28 states have internal predecessors, (128), 8 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 119 [2022-07-12 11:00:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:55,148 INFO L225 Difference]: With dead ends: 419 [2022-07-12 11:00:55,148 INFO L226 Difference]: Without dead ends: 334 [2022-07-12 11:00:55,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 237 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=489, Invalid=2817, Unknown=0, NotChecked=0, Total=3306 [2022-07-12 11:00:55,149 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 284 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:55,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1198 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2372 Invalid, 0 Unknown, 663 Unchecked, 1.5s Time] [2022-07-12 11:00:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-12 11:00:55,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2022-07-12 11:00:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 215 states have (on average 1.1534883720930234) internal successors, (248), 223 states have internal predecessors, (248), 53 states have call successors, (53), 20 states have call predecessors, (53), 25 states have return successors, (86), 50 states have call predecessors, (86), 52 states have call successors, (86) [2022-07-12 11:00:55,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 387 transitions. [2022-07-12 11:00:55,163 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 387 transitions. Word has length 119 [2022-07-12 11:00:55,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:55,164 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 387 transitions. [2022-07-12 11:00:55,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.266666666666667) internal successors, (128), 28 states have internal predecessors, (128), 8 states have call successors, (30), 6 states have call predecessors, (30), 5 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2022-07-12 11:00:55,164 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 387 transitions. [2022-07-12 11:00:55,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 11:00:55,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:55,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:55,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:55,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 11:00:55,375 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1760416737, now seen corresponding path program 1 times [2022-07-12 11:00:55,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:55,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067873866] [2022-07-12 11:00:55,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:55,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:00:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:00:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:00:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:55,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067873866] [2022-07-12 11:00:55,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067873866] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:55,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104494626] [2022-07-12 11:00:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:55,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:55,719 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) [2022-07-12 11:00:55,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:00:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:56,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-12 11:00:56,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:56,193 INFO L390 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 [2022-07-12 11:00:56,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:00:56,344 INFO L390 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 20 treesize of output 19 [2022-07-12 11:00:56,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 11:00:56,531 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 11:00:56,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 1 [2022-07-12 11:00:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 11:00:56,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:56,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104494626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:56,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:56,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2022-07-12 11:00:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701045925] [2022-07-12 11:00:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:56,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 11:00:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 11:00:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-12 11:00:56,534 INFO L87 Difference]: Start difference. First operand 294 states and 387 transitions. Second operand has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:00:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:56,631 INFO L93 Difference]: Finished difference Result 548 states and 693 transitions. [2022-07-12 11:00:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 11:00:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 119 [2022-07-12 11:00:56,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:56,634 INFO L225 Difference]: With dead ends: 548 [2022-07-12 11:00:56,634 INFO L226 Difference]: Without dead ends: 350 [2022-07-12 11:00:56,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:00:56,635 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 25 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:56,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 950 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-07-12 11:00:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-12 11:00:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-07-12 11:00:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 257 states have (on average 1.1517509727626458) internal successors, (296), 267 states have internal predecessors, (296), 55 states have call successors, (55), 22 states have call predecessors, (55), 29 states have return successors, (92), 52 states have call predecessors, (92), 54 states have call successors, (92) [2022-07-12 11:00:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 443 transitions. [2022-07-12 11:00:56,650 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 443 transitions. Word has length 119 [2022-07-12 11:00:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:56,650 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 443 transitions. [2022-07-12 11:00:56,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:00:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 443 transitions. [2022-07-12 11:00:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 11:00:56,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:56,652 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:00:56,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 11:00:56,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:00:56,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash 702578659, now seen corresponding path program 1 times [2022-07-12 11:00:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:56,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309017444] [2022-07-12 11:00:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:56,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:00:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:00:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:00:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:00:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:00:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 11:00:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:57,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309017444] [2022-07-12 11:00:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309017444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020372492] [2022-07-12 11:00:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:57,196 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) [2022-07-12 11:00:57,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:00:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:57,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-12 11:00:57,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:00:57,710 INFO L390 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 [2022-07-12 11:00:57,713 INFO L390 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 [2022-07-12 11:00:58,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-12 11:00:58,112 INFO L390 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 [2022-07-12 11:00:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 11:00:58,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:00:58,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020372492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:00:58,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:00:58,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 24 [2022-07-12 11:00:58,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887757502] [2022-07-12 11:00:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:00:58,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:00:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:58,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:00:58,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:00:58,166 INFO L87 Difference]: Start difference. First operand 342 states and 443 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:00:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:00:58,323 INFO L93 Difference]: Finished difference Result 685 states and 904 transitions. [2022-07-12 11:00:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:00:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 119 [2022-07-12 11:00:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:00:58,326 INFO L225 Difference]: With dead ends: 685 [2022-07-12 11:00:58,326 INFO L226 Difference]: Without dead ends: 418 [2022-07-12 11:00:58,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:00:58,328 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 59 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:00:58,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1414 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2022-07-12 11:00:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-12 11:00:58,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 380. [2022-07-12 11:00:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 297 states have internal predecessors, (327), 59 states have call successors, (59), 26 states have call predecessors, (59), 33 states have return successors, (97), 56 states have call predecessors, (97), 58 states have call successors, (97) [2022-07-12 11:00:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 483 transitions. [2022-07-12 11:00:58,346 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 483 transitions. Word has length 119 [2022-07-12 11:00:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:00:58,347 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 483 transitions. [2022-07-12 11:00:58,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 11 states have internal predecessors, (67), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 11:00:58,347 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 483 transitions. [2022-07-12 11:00:58,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 11:00:58,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:00:58,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-12 11:00:58,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:00:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 11:00:58,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:00:58,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:00:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1861255905, now seen corresponding path program 3 times [2022-07-12 11:00:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:00:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288936469] [2022-07-12 11:00:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:00:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:00:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:00:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:00:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:00:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:00:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:00:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:00:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:00:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:00:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:00:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:00:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:00:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:00:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:00:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 11:00:58,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:00:58,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288936469] [2022-07-12 11:00:58,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288936469] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:58,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72479351] [2022-07-12 11:00:58,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 11:00:58,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:00:58,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:00:58,832 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) [2022-07-12 11:00:58,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:00:59,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 11:00:59,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:00:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 11:00:59,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 11:01:00,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:00,482 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:01:00,483 INFO L390 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 [2022-07-12 11:01:00,488 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-12 11:01:00,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 11:01:00,515 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 11:01:00,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72479351] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:00,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:00,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-12 11:01:00,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578148503] [2022-07-12 11:01:00,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:00,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 11:01:00,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 11:01:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:01:00,517 INFO L87 Difference]: Start difference. First operand 380 states and 483 transitions. Second operand has 26 states, 25 states have (on average 4.32) internal successors, (108), 24 states have internal predecessors, (108), 4 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:01:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:02,210 INFO L93 Difference]: Finished difference Result 626 states and 800 transitions. [2022-07-12 11:01:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 11:01:02,210 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.32) internal successors, (108), 24 states have internal predecessors, (108), 4 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 123 [2022-07-12 11:01:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:02,220 INFO L225 Difference]: With dead ends: 626 [2022-07-12 11:01:02,220 INFO L226 Difference]: Without dead ends: 397 [2022-07-12 11:01:02,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=425, Invalid=2331, Unknown=0, NotChecked=0, Total=2756 [2022-07-12 11:01:02,223 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 219 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:02,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 886 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1928 Invalid, 0 Unknown, 250 Unchecked, 1.0s Time] [2022-07-12 11:01:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-12 11:01:02,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 376. [2022-07-12 11:01:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 285 states have (on average 1.1508771929824562) internal successors, (328), 292 states have internal predecessors, (328), 59 states have call successors, (59), 26 states have call predecessors, (59), 31 states have return successors, (87), 57 states have call predecessors, (87), 58 states have call successors, (87) [2022-07-12 11:01:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 474 transitions. [2022-07-12 11:01:02,242 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 474 transitions. Word has length 123 [2022-07-12 11:01:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:02,243 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 474 transitions. [2022-07-12 11:01:02,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.32) internal successors, (108), 24 states have internal predecessors, (108), 4 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 11:01:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 474 transitions. [2022-07-12 11:01:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 11:01:02,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:02,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:02,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:02,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 11:01:02,468 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash 624904765, now seen corresponding path program 1 times [2022-07-12 11:01:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:02,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677357154] [2022-07-12 11:01:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:01:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:01:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:01:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:01:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:01:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:01:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:01:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 11:01:02,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:01:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:01:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 11:01:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677357154] [2022-07-12 11:01:02,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677357154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:02,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693093904] [2022-07-12 11:01:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:02,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:02,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:02,780 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) [2022-07-12 11:01:02,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:01:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:03,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 11:01:03,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:03,271 INFO L390 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 [2022-07-12 11:01:03,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-12 11:01:03,659 INFO L390 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 [2022-07-12 11:01:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 11:01:03,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:01:03,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693093904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:03,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:01:03,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [11] total 24 [2022-07-12 11:01:03,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212518147] [2022-07-12 11:01:03,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:03,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:01:03,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:03,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:01:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:01:03,695 INFO L87 Difference]: Start difference. First operand 376 states and 474 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 11:01:04,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:04,149 INFO L93 Difference]: Finished difference Result 716 states and 923 transitions. [2022-07-12 11:01:04,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 11:01:04,150 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2022-07-12 11:01:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:04,152 INFO L225 Difference]: With dead ends: 716 [2022-07-12 11:01:04,152 INFO L226 Difference]: Without dead ends: 435 [2022-07-12 11:01:04,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:01:04,153 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 244 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 439 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 932 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 518 Invalid, 0 Unknown, 439 Unchecked, 0.4s Time] [2022-07-12 11:01:04,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-12 11:01:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 370. [2022-07-12 11:01:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 281 states have (on average 1.1494661921708185) internal successors, (323), 289 states have internal predecessors, (323), 57 states have call successors, (57), 26 states have call predecessors, (57), 31 states have return successors, (84), 54 states have call predecessors, (84), 56 states have call successors, (84) [2022-07-12 11:01:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 464 transitions. [2022-07-12 11:01:04,170 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 464 transitions. Word has length 124 [2022-07-12 11:01:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:04,170 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 464 transitions. [2022-07-12 11:01:04,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 11:01:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 464 transitions. [2022-07-12 11:01:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 11:01:04,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:04,172 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:04,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:04,383 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1300589502, now seen corresponding path program 1 times [2022-07-12 11:01:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821703656] [2022-07-12 11:01:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:01:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:01:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:01:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:01:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:01:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:01:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:04,681 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 11:01:04,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:04,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821703656] [2022-07-12 11:01:04,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821703656] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:04,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541340022] [2022-07-12 11:01:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:04,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:04,683 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) [2022-07-12 11:01:04,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:01:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:05,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 11:01:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:05,298 INFO L390 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 [2022-07-12 11:01:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 11:01:05,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:01:05,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541340022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:05,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:01:05,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 16 [2022-07-12 11:01:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415874599] [2022-07-12 11:01:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:01:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:01:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:01:05,330 INFO L87 Difference]: Start difference. First operand 370 states and 464 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 11:01:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:05,674 INFO L93 Difference]: Finished difference Result 707 states and 913 transitions. [2022-07-12 11:01:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:01:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2022-07-12 11:01:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:05,681 INFO L225 Difference]: With dead ends: 707 [2022-07-12 11:01:05,681 INFO L226 Difference]: Without dead ends: 423 [2022-07-12 11:01:05,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:01:05,682 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 85 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:05,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1041 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 292 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-07-12 11:01:05,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-12 11:01:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 376. [2022-07-12 11:01:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 286 states have (on average 1.1433566433566433) internal successors, (327), 295 states have internal predecessors, (327), 57 states have call successors, (57), 26 states have call predecessors, (57), 32 states have return successors, (90), 54 states have call predecessors, (90), 56 states have call successors, (90) [2022-07-12 11:01:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 474 transitions. [2022-07-12 11:01:05,718 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 474 transitions. Word has length 126 [2022-07-12 11:01:05,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:05,719 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 474 transitions. [2022-07-12 11:01:05,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 4 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 11:01:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 474 transitions. [2022-07-12 11:01:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 11:01:05,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:05,720 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:05,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 11:01:05,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:05,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 799015378, now seen corresponding path program 2 times [2022-07-12 11:01:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:05,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945535396] [2022-07-12 11:01:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:01:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:01:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 11:01:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945535396] [2022-07-12 11:01:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945535396] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440488578] [2022-07-12 11:01:06,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:01:06,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:06,230 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) [2022-07-12 11:01:06,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:01:06,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:01:06,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:01:06,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-12 11:01:06,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:06,750 INFO L390 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 [2022-07-12 11:01:06,880 INFO L390 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 [2022-07-12 11:01:06,889 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:01:06,889 INFO L390 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 15 treesize of output 21 [2022-07-12 11:01:07,111 INFO L390 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 9 treesize of output 3 [2022-07-12 11:01:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 60 proven. 63 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 11:01:07,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:08,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440488578] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:08,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:08,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 12] total 40 [2022-07-12 11:01:08,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069992270] [2022-07-12 11:01:08,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:08,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-12 11:01:08,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:08,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-12 11:01:08,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-07-12 11:01:08,062 INFO L87 Difference]: Start difference. First operand 376 states and 474 transitions. Second operand has 40 states, 39 states have (on average 4.051282051282051) internal successors, (158), 36 states have internal predecessors, (158), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2022-07-12 11:01:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:13,523 INFO L93 Difference]: Finished difference Result 867 states and 1259 transitions. [2022-07-12 11:01:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-07-12 11:01:13,523 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.051282051282051) internal successors, (158), 36 states have internal predecessors, (158), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 125 [2022-07-12 11:01:13,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:13,532 INFO L225 Difference]: With dead ends: 867 [2022-07-12 11:01:13,532 INFO L226 Difference]: Without dead ends: 685 [2022-07-12 11:01:13,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 256 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=664, Invalid=6992, Unknown=0, NotChecked=0, Total=7656 [2022-07-12 11:01:13,535 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 414 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 6393 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 7752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 6393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 915 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:13,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 2768 Invalid, 7752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 6393 Invalid, 0 Unknown, 915 Unchecked, 4.0s Time] [2022-07-12 11:01:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-12 11:01:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 527. [2022-07-12 11:01:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 373 states have (on average 1.1501340482573728) internal successors, (429), 383 states have internal predecessors, (429), 114 states have call successors, (114), 32 states have call predecessors, (114), 39 states have return successors, (213), 111 states have call predecessors, (213), 113 states have call successors, (213) [2022-07-12 11:01:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 756 transitions. [2022-07-12 11:01:13,569 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 756 transitions. Word has length 125 [2022-07-12 11:01:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:13,569 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 756 transitions. [2022-07-12 11:01:13,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.051282051282051) internal successors, (158), 36 states have internal predecessors, (158), 11 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2022-07-12 11:01:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 756 transitions. [2022-07-12 11:01:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 11:01:13,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:13,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:13,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:13,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 11:01:13,780 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1680291573, now seen corresponding path program 1 times [2022-07-12 11:01:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:13,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50844505] [2022-07-12 11:01:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:13,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:01:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:01:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 11:01:13,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:13,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50844505] [2022-07-12 11:01:13,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50844505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:13,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:01:13,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 11:01:13,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159356914] [2022-07-12 11:01:13,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:13,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:01:13,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:13,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:01:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:01:13,994 INFO L87 Difference]: Start difference. First operand 527 states and 756 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:01:14,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:14,509 INFO L93 Difference]: Finished difference Result 559 states and 796 transitions. [2022-07-12 11:01:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 11:01:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2022-07-12 11:01:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:14,513 INFO L225 Difference]: With dead ends: 559 [2022-07-12 11:01:14,513 INFO L226 Difference]: Without dead ends: 557 [2022-07-12 11:01:14,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:01:14,514 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 94 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:14,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 630 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:01:14,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-12 11:01:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 545. [2022-07-12 11:01:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 388 states have (on average 1.1443298969072164) internal successors, (444), 401 states have internal predecessors, (444), 114 states have call successors, (114), 32 states have call predecessors, (114), 42 states have return successors, (221), 111 states have call predecessors, (221), 113 states have call successors, (221) [2022-07-12 11:01:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 779 transitions. [2022-07-12 11:01:14,544 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 779 transitions. Word has length 127 [2022-07-12 11:01:14,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:14,545 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 779 transitions. [2022-07-12 11:01:14,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 11:01:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 779 transitions. [2022-07-12 11:01:14,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-12 11:01:14,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:14,547 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 11:01:14,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 11:01:14,547 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:14,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1913611145, now seen corresponding path program 1 times [2022-07-12 11:01:14,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:14,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666290043] [2022-07-12 11:01:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:14,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:01:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 11:01:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:14,918 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 42 proven. 17 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 11:01:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:14,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666290043] [2022-07-12 11:01:14,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666290043] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:14,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244116175] [2022-07-12 11:01:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:14,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:14,920 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) [2022-07-12 11:01:14,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 11:01:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:15,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-12 11:01:15,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:15,394 INFO L390 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 [2022-07-12 11:01:15,546 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:01:15,546 INFO L390 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 15 treesize of output 21 [2022-07-12 11:01:15,790 INFO L390 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 9 treesize of output 3 [2022-07-12 11:01:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 62 proven. 65 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 11:01:16,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:16,725 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:01:16,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 11:01:16,787 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:16,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244116175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:16,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:16,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 12] total 41 [2022-07-12 11:01:16,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799382862] [2022-07-12 11:01:16,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 11:01:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 11:01:16,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1486, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 11:01:16,789 INFO L87 Difference]: Start difference. First operand 545 states and 779 transitions. Second operand has 41 states, 40 states have (on average 4.2) internal successors, (168), 37 states have internal predecessors, (168), 11 states have call successors, (33), 7 states have call predecessors, (33), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-12 11:01:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:21,789 INFO L93 Difference]: Finished difference Result 919 states and 1332 transitions. [2022-07-12 11:01:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-07-12 11:01:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.2) internal successors, (168), 37 states have internal predecessors, (168), 11 states have call successors, (33), 7 states have call predecessors, (33), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 127 [2022-07-12 11:01:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:21,793 INFO L225 Difference]: With dead ends: 919 [2022-07-12 11:01:21,793 INFO L226 Difference]: Without dead ends: 724 [2022-07-12 11:01:21,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 266 SyntacticMatches, 9 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=958, Invalid=9344, Unknown=0, NotChecked=0, Total=10302 [2022-07-12 11:01:21,796 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 468 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 4944 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 4944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 957 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:21,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1590 Invalid, 6284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 4944 Invalid, 0 Unknown, 957 Unchecked, 2.9s Time] [2022-07-12 11:01:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-12 11:01:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 584. [2022-07-12 11:01:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 412 states have (on average 1.1480582524271845) internal successors, (473), 422 states have internal predecessors, (473), 127 states have call successors, (127), 35 states have call predecessors, (127), 44 states have return successors, (229), 126 states have call predecessors, (229), 126 states have call successors, (229) [2022-07-12 11:01:21,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 829 transitions. [2022-07-12 11:01:21,838 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 829 transitions. Word has length 127 [2022-07-12 11:01:21,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:21,839 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 829 transitions. [2022-07-12 11:01:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.2) internal successors, (168), 37 states have internal predecessors, (168), 11 states have call successors, (33), 7 states have call predecessors, (33), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-12 11:01:21,839 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 829 transitions. [2022-07-12 11:01:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 11:01:21,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:21,842 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:21,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:22,049 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1112355472, now seen corresponding path program 1 times [2022-07-12 11:01:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:22,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19303887] [2022-07-12 11:01:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:01:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 11:01:22,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:01:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 11:01:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19303887] [2022-07-12 11:01:22,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19303887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:22,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597603709] [2022-07-12 11:01:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:22,263 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) [2022-07-12 11:01:22,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 11:01:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:22,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-12 11:01:22,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:01:22,899 INFO L390 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 22 treesize of output 21 [2022-07-12 11:01:23,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 11:01:23,289 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 11:01:23,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2022-07-12 11:01:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 110 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 11:01:23,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:25,500 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_7| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_7| Int) (v_ArrVal_1459 Int)) (or (not (= (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_7| (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.base_7|) |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_7| v_ArrVal_1459)) |c_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.offset|)) 18446744073709551616) 0)) (not (<= |v_ULTIMATE.start_aws_byte_buf_write_u8_~#c#1.offset_7| 0)))) is different from false [2022-07-12 11:01:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597603709] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:25,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:01:25,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 23 [2022-07-12 11:01:25,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899762024] [2022-07-12 11:01:25,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:25,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 11:01:25,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 11:01:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=732, Unknown=1, NotChecked=54, Total=870 [2022-07-12 11:01:25,524 INFO L87 Difference]: Start difference. First operand 584 states and 829 transitions. Second operand has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-12 11:01:27,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:27,198 INFO L93 Difference]: Finished difference Result 947 states and 1295 transitions. [2022-07-12 11:01:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 11:01:27,199 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) Word has length 129 [2022-07-12 11:01:27,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:27,201 INFO L225 Difference]: With dead ends: 947 [2022-07-12 11:01:27,201 INFO L226 Difference]: Without dead ends: 515 [2022-07-12 11:01:27,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 207 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=436, Invalid=3227, Unknown=1, NotChecked=118, Total=3782 [2022-07-12 11:01:27,204 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 187 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:27,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 935 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1624 Invalid, 0 Unknown, 436 Unchecked, 0.8s Time] [2022-07-12 11:01:27,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-12 11:01:27,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 481. [2022-07-12 11:01:27,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 342 states have (on average 1.128654970760234) internal successors, (386), 352 states have internal predecessors, (386), 97 states have call successors, (97), 32 states have call predecessors, (97), 41 states have return successors, (153), 96 states have call predecessors, (153), 96 states have call successors, (153) [2022-07-12 11:01:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 636 transitions. [2022-07-12 11:01:27,231 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 636 transitions. Word has length 129 [2022-07-12 11:01:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:27,231 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 636 transitions. [2022-07-12 11:01:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.428571428571429) internal successors, (135), 20 states have internal predecessors, (135), 7 states have call successors, (26), 5 states have call predecessors, (26), 7 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-12 11:01:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 636 transitions. [2022-07-12 11:01:27,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 11:01:27,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:27,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:27,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:27,447 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -714007045, now seen corresponding path program 2 times [2022-07-12 11:01:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036475650] [2022-07-12 11:01:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:01:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:01:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:28,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036475650] [2022-07-12 11:01:28,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036475650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:28,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565061190] [2022-07-12 11:01:28,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:01:28,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:28,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:28,472 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) [2022-07-12 11:01:28,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 11:01:28,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:01:28,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:01:28,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-12 11:01:28,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:28,945 INFO L390 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 [2022-07-12 11:01:29,115 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:01:29,115 INFO L390 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 [2022-07-12 11:01:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 69 proven. 44 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 11:01:29,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:29,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565061190] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:29,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:29,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 9] total 33 [2022-07-12 11:01:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379367854] [2022-07-12 11:01:29,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 11:01:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 11:01:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 11:01:29,864 INFO L87 Difference]: Start difference. First operand 481 states and 636 transitions. Second operand has 33 states, 32 states have (on average 4.6875) internal successors, (150), 30 states have internal predecessors, (150), 10 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-12 11:01:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:32,357 INFO L93 Difference]: Finished difference Result 712 states and 926 transitions. [2022-07-12 11:01:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 11:01:32,358 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.6875) internal successors, (150), 30 states have internal predecessors, (150), 10 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 131 [2022-07-12 11:01:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:32,359 INFO L225 Difference]: With dead ends: 712 [2022-07-12 11:01:32,360 INFO L226 Difference]: Without dead ends: 500 [2022-07-12 11:01:32,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 271 SyntacticMatches, 10 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=345, Invalid=2625, Unknown=0, NotChecked=0, Total=2970 [2022-07-12 11:01:32,362 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 365 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 4254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 511 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:32,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1078 Invalid, 4254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3595 Invalid, 0 Unknown, 511 Unchecked, 1.9s Time] [2022-07-12 11:01:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-12 11:01:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 476. [2022-07-12 11:01:32,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 344 states have (on average 1.119186046511628) internal successors, (385), 357 states have internal predecessors, (385), 88 states have call successors, (88), 32 states have call predecessors, (88), 43 states have return successors, (125), 86 states have call predecessors, (125), 87 states have call successors, (125) [2022-07-12 11:01:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 598 transitions. [2022-07-12 11:01:32,392 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 598 transitions. Word has length 131 [2022-07-12 11:01:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:32,392 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 598 transitions. [2022-07-12 11:01:32,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.6875) internal successors, (150), 30 states have internal predecessors, (150), 10 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-12 11:01:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 598 transitions. [2022-07-12 11:01:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 11:01:32,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:32,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:01:32,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:32,608 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 454583233, now seen corresponding path program 1 times [2022-07-12 11:01:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:32,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053799183] [2022-07-12 11:01:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:01:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:01:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 11:01:32,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053799183] [2022-07-12 11:01:32,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053799183] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:32,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072212611] [2022-07-12 11:01:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:32,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:32,918 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) [2022-07-12 11:01:32,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 11:01:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:33,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 11:01:33,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 102 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 11:01:33,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:34,288 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-12 11:01:34,289 INFO L390 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 39 treesize of output 1 [2022-07-12 11:01:34,418 INFO L356 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-07-12 11:01:34,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2022-07-12 11:01:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:34,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072212611] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:34,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:34,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2022-07-12 11:01:34,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945031029] [2022-07-12 11:01:34,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:34,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 11:01:34,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 11:01:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:01:34,509 INFO L87 Difference]: Start difference. First operand 476 states and 598 transitions. Second operand has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 11:01:36,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:36,294 INFO L93 Difference]: Finished difference Result 653 states and 812 transitions. [2022-07-12 11:01:36,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 11:01:36,294 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 131 [2022-07-12 11:01:36,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:36,298 INFO L225 Difference]: With dead ends: 653 [2022-07-12 11:01:36,298 INFO L226 Difference]: Without dead ends: 546 [2022-07-12 11:01:36,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 270 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=430, Invalid=1732, Unknown=0, NotChecked=0, Total=2162 [2022-07-12 11:01:36,302 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 265 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:36,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 613 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1305 Invalid, 0 Unknown, 281 Unchecked, 1.0s Time] [2022-07-12 11:01:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-12 11:01:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 492. [2022-07-12 11:01:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 362 states have (on average 1.1132596685082874) internal successors, (403), 371 states have internal predecessors, (403), 86 states have call successors, (86), 36 states have call predecessors, (86), 43 states have return successors, (115), 84 states have call predecessors, (115), 85 states have call successors, (115) [2022-07-12 11:01:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 604 transitions. [2022-07-12 11:01:36,329 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 604 transitions. Word has length 131 [2022-07-12 11:01:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:36,330 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 604 transitions. [2022-07-12 11:01:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.172413793103448) internal successors, (121), 28 states have internal predecessors, (121), 4 states have call successors, (21), 4 states have call predecessors, (21), 7 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 11:01:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 604 transitions. [2022-07-12 11:01:36,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 11:01:36,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:36,332 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-12 11:01:36,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:36,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-12 11:01:36,551 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -556778489, now seen corresponding path program 1 times [2022-07-12 11:01:36,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:36,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853203774] [2022-07-12 11:01:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:36,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:01:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:01:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:01:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:01:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:01:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 11:01:37,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:37,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853203774] [2022-07-12 11:01:37,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853203774] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:01:37,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342996394] [2022-07-12 11:01:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:37,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:01:37,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:01:37,044 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) [2022-07-12 11:01:37,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-12 11:01:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-12 11:01:37,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:01:37,500 INFO L390 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 [2022-07-12 11:01:37,682 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-12 11:01:37,682 INFO L390 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 31 treesize of output 30 [2022-07-12 11:01:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 67 proven. 64 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 11:01:49,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:01:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 11:01:49,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342996394] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:01:49,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:01:49,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 14] total 47 [2022-07-12 11:01:49,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458129563] [2022-07-12 11:01:49,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:01:49,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-12 11:01:49,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:49,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-12 11:01:49,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1993, Unknown=1, NotChecked=0, Total=2162 [2022-07-12 11:01:49,944 INFO L87 Difference]: Start difference. First operand 492 states and 604 transitions. Second operand has 47 states, 45 states have (on average 4.022222222222222) internal successors, (181), 43 states have internal predecessors, (181), 16 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) [2022-07-12 11:01:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:57,399 INFO L93 Difference]: Finished difference Result 870 states and 1096 transitions. [2022-07-12 11:01:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-12 11:01:57,400 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 4.022222222222222) internal successors, (181), 43 states have internal predecessors, (181), 16 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) Word has length 131 [2022-07-12 11:01:57,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:57,402 INFO L225 Difference]: With dead ends: 870 [2022-07-12 11:01:57,403 INFO L226 Difference]: Without dead ends: 639 [2022-07-12 11:01:57,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 254 SyntacticMatches, 24 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3422 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=995, Invalid=8904, Unknown=1, NotChecked=0, Total=9900 [2022-07-12 11:01:57,406 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 674 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 6501 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 9164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 6501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2159 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:57,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1774 Invalid, 9164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 6501 Invalid, 0 Unknown, 2159 Unchecked, 4.7s Time] [2022-07-12 11:01:57,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-12 11:01:57,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 490. [2022-07-12 11:01:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 374 states have (on average 1.085561497326203) internal successors, (406), 382 states have internal predecessors, (406), 72 states have call successors, (72), 37 states have call predecessors, (72), 43 states have return successors, (93), 70 states have call predecessors, (93), 71 states have call successors, (93) [2022-07-12 11:01:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 571 transitions. [2022-07-12 11:01:57,434 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 571 transitions. Word has length 131 [2022-07-12 11:01:57,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:57,434 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 571 transitions. [2022-07-12 11:01:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 4.022222222222222) internal successors, (181), 43 states have internal predecessors, (181), 16 states have call successors, (39), 8 states have call predecessors, (39), 10 states have return successors, (35), 14 states have call predecessors, (35), 16 states have call successors, (35) [2022-07-12 11:01:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 571 transitions. [2022-07-12 11:01:57,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 11:01:57,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:57,436 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 11:01:57,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-12 11:01:57,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-12 11:01:57,643 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -814740227, now seen corresponding path program 1 times [2022-07-12 11:01:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:57,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491867083] [2022-07-12 11:01:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:57,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:01:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:01:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:01:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:01:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:01:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:01:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-12 11:01:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491867083] [2022-07-12 11:01:57,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491867083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:57,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:01:57,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:01:57,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99156961] [2022-07-12 11:01:57,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:57,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:01:57,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:57,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:01:57,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:01:57,888 INFO L87 Difference]: Start difference. First operand 490 states and 571 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:01:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:58,395 INFO L93 Difference]: Finished difference Result 577 states and 681 transitions. [2022-07-12 11:01:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:01:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 133 [2022-07-12 11:01:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:58,398 INFO L225 Difference]: With dead ends: 577 [2022-07-12 11:01:58,398 INFO L226 Difference]: Without dead ends: 522 [2022-07-12 11:01:58,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:01:58,399 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 136 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:58,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 382 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:01:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-07-12 11:01:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 497. [2022-07-12 11:01:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 379 states have (on average 1.0844327176781003) internal successors, (411), 388 states have internal predecessors, (411), 72 states have call successors, (72), 37 states have call predecessors, (72), 45 states have return successors, (95), 71 states have call predecessors, (95), 71 states have call successors, (95) [2022-07-12 11:01:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 578 transitions. [2022-07-12 11:01:58,432 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 578 transitions. Word has length 133 [2022-07-12 11:01:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 578 transitions. [2022-07-12 11:01:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:01:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 578 transitions. [2022-07-12 11:01:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 11:01:58,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:58,434 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-12 11:01:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 11:01:58,435 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:58,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1072696079, now seen corresponding path program 1 times [2022-07-12 11:01:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:58,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937050176] [2022-07-12 11:01:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:01:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:01:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:01:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:01:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:01:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:01:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-12 11:01:58,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:58,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937050176] [2022-07-12 11:01:58,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937050176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:58,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:01:58,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:01:58,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613287039] [2022-07-12 11:01:58,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:58,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:01:58,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:01:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:01:58,708 INFO L87 Difference]: Start difference. First operand 497 states and 578 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 11:01:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:01:59,068 INFO L93 Difference]: Finished difference Result 612 states and 724 transitions. [2022-07-12 11:01:59,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:01:59,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-07-12 11:01:59,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:01:59,071 INFO L225 Difference]: With dead ends: 612 [2022-07-12 11:01:59,071 INFO L226 Difference]: Without dead ends: 498 [2022-07-12 11:01:59,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:01:59,072 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 94 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:01:59,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 279 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:01:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-07-12 11:01:59,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 493. [2022-07-12 11:01:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 375 states have (on average 1.0773333333333333) internal successors, (404), 384 states have internal predecessors, (404), 72 states have call successors, (72), 37 states have call predecessors, (72), 45 states have return successors, (95), 71 states have call predecessors, (95), 71 states have call successors, (95) [2022-07-12 11:01:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 571 transitions. [2022-07-12 11:01:59,133 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 571 transitions. Word has length 132 [2022-07-12 11:01:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:01:59,134 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 571 transitions. [2022-07-12 11:01:59,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 11:01:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 571 transitions. [2022-07-12 11:01:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 11:01:59,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:01:59,136 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 11:01:59,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 11:01:59,136 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:01:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:01:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 665294586, now seen corresponding path program 1 times [2022-07-12 11:01:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:01:59,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557637175] [2022-07-12 11:01:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:01:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:01:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:01:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:01:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:01:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:01:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:01:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:01:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:01:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:01:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:01:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:01:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:01:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:01:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:01:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:01:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-12 11:01:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:01:59,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557637175] [2022-07-12 11:01:59,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557637175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:01:59,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:01:59,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:01:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890477990] [2022-07-12 11:01:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:01:59,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:01:59,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:01:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:01:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:01:59,441 INFO L87 Difference]: Start difference. First operand 493 states and 571 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 11:02:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:00,005 INFO L93 Difference]: Finished difference Result 511 states and 595 transitions. [2022-07-12 11:02:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:02:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-07-12 11:02:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:00,008 INFO L225 Difference]: With dead ends: 511 [2022-07-12 11:02:00,008 INFO L226 Difference]: Without dead ends: 509 [2022-07-12 11:02:00,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:02:00,009 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 181 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:00,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 280 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:02:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-07-12 11:02:00,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 497. [2022-07-12 11:02:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 378 states have (on average 1.0767195767195767) internal successors, (407), 387 states have internal predecessors, (407), 72 states have call successors, (72), 38 states have call predecessors, (72), 46 states have return successors, (95), 71 states have call predecessors, (95), 71 states have call successors, (95) [2022-07-12 11:02:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 574 transitions. [2022-07-12 11:02:00,040 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 574 transitions. Word has length 134 [2022-07-12 11:02:00,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:00,041 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 574 transitions. [2022-07-12 11:02:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 11:02:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 574 transitions. [2022-07-12 11:02:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 11:02:00,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:00,043 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:00,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 11:02:00,043 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:00,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash 108106458, now seen corresponding path program 1 times [2022-07-12 11:02:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:00,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616478092] [2022-07-12 11:02:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:02:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:02:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:02:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:02:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:02:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-12 11:02:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:00,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616478092] [2022-07-12 11:02:00,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616478092] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:00,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107314210] [2022-07-12 11:02:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:00,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:00,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:00,525 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) [2022-07-12 11:02:00,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-12 11:02:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:01,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-12 11:02:01,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:01,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:02:01,252 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:02:01,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:02:01,293 INFO L390 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 [2022-07-12 11:02:01,589 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:02:01,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-12 11:02:01,624 INFO L390 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 27 treesize of output 27 [2022-07-12 11:02:03,639 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_54| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_54|) 8))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#buf~3#1.base_BEFORE_CALL_54| .cse0)) (not (= .cse0 0))))) is different from true [2022-07-12 11:02:03,693 INFO L390 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 27 treesize of output 27 [2022-07-12 11:02:03,737 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:03,737 INFO L390 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 23 treesize of output 27 [2022-07-12 11:02:03,741 INFO L390 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 13 treesize of output 9 [2022-07-12 11:02:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 44 proven. 97 refuted. 0 times theorem prover too weak. 7 trivial. 20 not checked. [2022-07-12 11:02:05,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:06,886 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 11:02:06,886 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-12 11:02:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 54 proven. 26 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 11:02:06,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107314210] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:02:06,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:02:06,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 35, 25] total 67 [2022-07-12 11:02:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61713551] [2022-07-12 11:02:06,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:06,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-07-12 11:02:06,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-07-12 11:02:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=4056, Unknown=1, NotChecked=128, Total=4422 [2022-07-12 11:02:06,964 INFO L87 Difference]: Start difference. First operand 497 states and 574 transitions. Second operand has 67 states, 62 states have (on average 3.274193548387097) internal successors, (203), 58 states have internal predecessors, (203), 17 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (32), 16 states have call predecessors, (32), 14 states have call successors, (32) [2022-07-12 11:02:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:25,727 INFO L93 Difference]: Finished difference Result 903 states and 1094 transitions. [2022-07-12 11:02:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-07-12 11:02:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 62 states have (on average 3.274193548387097) internal successors, (203), 58 states have internal predecessors, (203), 17 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (32), 16 states have call predecessors, (32), 14 states have call successors, (32) Word has length 134 [2022-07-12 11:02:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:25,730 INFO L225 Difference]: With dead ends: 903 [2022-07-12 11:02:25,730 INFO L226 Difference]: Without dead ends: 706 [2022-07-12 11:02:25,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 243 SyntacticMatches, 17 SemanticMatches, 147 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=1383, Invalid=20373, Unknown=4, NotChecked=292, Total=22052 [2022-07-12 11:02:25,733 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 470 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 5397 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 8325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 5397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2618 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:25,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 2728 Invalid, 8325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 5397 Invalid, 0 Unknown, 2618 Unchecked, 3.5s Time] [2022-07-12 11:02:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-07-12 11:02:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 627. [2022-07-12 11:02:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 463 states have (on average 1.0734341252699784) internal successors, (497), 470 states have internal predecessors, (497), 104 states have call successors, (104), 52 states have call predecessors, (104), 59 states have return successors, (134), 104 states have call predecessors, (134), 103 states have call successors, (134) [2022-07-12 11:02:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 735 transitions. [2022-07-12 11:02:25,773 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 735 transitions. Word has length 134 [2022-07-12 11:02:25,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:25,773 INFO L495 AbstractCegarLoop]: Abstraction has 627 states and 735 transitions. [2022-07-12 11:02:25,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 62 states have (on average 3.274193548387097) internal successors, (203), 58 states have internal predecessors, (203), 17 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (32), 16 states have call predecessors, (32), 14 states have call successors, (32) [2022-07-12 11:02:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 735 transitions. [2022-07-12 11:02:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 11:02:25,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:25,775 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-12 11:02:25,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:25,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-12 11:02:25,975 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1511185504, now seen corresponding path program 1 times [2022-07-12 11:02:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:25,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388078827] [2022-07-12 11:02:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:02:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:02:26,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:02:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:02:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:02:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:02:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 11:02:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:26,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388078827] [2022-07-12 11:02:26,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388078827] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:26,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075559315] [2022-07-12 11:02:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:26,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:26,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:26,314 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) [2022-07-12 11:02:26,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-12 11:02:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:26,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-12 11:02:26,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:26,816 INFO L390 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 [2022-07-12 11:02:26,819 INFO L390 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 [2022-07-12 11:02:27,202 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:27,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:02:27,259 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:27,259 INFO L390 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 [2022-07-12 11:02:27,264 INFO L390 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 [2022-07-12 11:02:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:27,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-12 11:02:27,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:27,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-12 11:02:27,464 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:27,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-12 11:02:27,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:27,532 INFO L390 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 32 treesize of output 31 [2022-07-12 11:02:27,546 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:02:27,546 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 54 [2022-07-12 11:02:27,555 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:27,555 INFO L390 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 [2022-07-12 11:02:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 47 proven. 101 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 11:02:28,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:29,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075559315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:29,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:02:29,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 32] total 41 [2022-07-12 11:02:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009019678] [2022-07-12 11:02:29,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-12 11:02:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-12 11:02:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2438, Unknown=7, NotChecked=0, Total=2652 [2022-07-12 11:02:29,587 INFO L87 Difference]: Start difference. First operand 627 states and 735 transitions. Second operand has 41 states, 38 states have (on average 4.052631578947368) internal successors, (154), 35 states have internal predecessors, (154), 15 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) [2022-07-12 11:02:32,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:32,353 INFO L93 Difference]: Finished difference Result 804 states and 968 transitions. [2022-07-12 11:02:32,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-12 11:02:32,354 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.052631578947368) internal successors, (154), 35 states have internal predecessors, (154), 15 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) Word has length 140 [2022-07-12 11:02:32,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:32,356 INFO L225 Difference]: With dead ends: 804 [2022-07-12 11:02:32,356 INFO L226 Difference]: Without dead ends: 666 [2022-07-12 11:02:32,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 211 SyntacticMatches, 10 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2839 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=646, Invalid=8089, Unknown=7, NotChecked=0, Total=8742 [2022-07-12 11:02:32,357 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 307 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 874 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:32,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 858 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2049 Invalid, 0 Unknown, 874 Unchecked, 1.2s Time] [2022-07-12 11:02:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-12 11:02:32,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 611. [2022-07-12 11:02:32,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 450 states have (on average 1.0733333333333333) internal successors, (483), 457 states have internal predecessors, (483), 102 states have call successors, (102), 52 states have call predecessors, (102), 58 states have return successors, (127), 101 states have call predecessors, (127), 100 states have call successors, (127) [2022-07-12 11:02:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 712 transitions. [2022-07-12 11:02:32,407 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 712 transitions. Word has length 140 [2022-07-12 11:02:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:32,407 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 712 transitions. [2022-07-12 11:02:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.052631578947368) internal successors, (154), 35 states have internal predecessors, (154), 15 states have call successors, (32), 10 states have call predecessors, (32), 12 states have return successors, (31), 12 states have call predecessors, (31), 15 states have call successors, (31) [2022-07-12 11:02:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 712 transitions. [2022-07-12 11:02:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 11:02:32,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:32,409 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:32,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:32,623 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:32,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:32,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1186684275, now seen corresponding path program 1 times [2022-07-12 11:02:32,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:32,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210885037] [2022-07-12 11:02:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:02:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:02:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:02:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:02:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:02:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:02:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:02:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:02:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:02:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:02:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:02:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-12 11:02:33,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210885037] [2022-07-12 11:02:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210885037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:33,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:33,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-12 11:02:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705986193] [2022-07-12 11:02:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 11:02:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 11:02:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:02:33,374 INFO L87 Difference]: Start difference. First operand 611 states and 712 transitions. Second operand has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 19 states have internal predecessors, (65), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-12 11:02:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:35,084 INFO L93 Difference]: Finished difference Result 647 states and 760 transitions. [2022-07-12 11:02:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 11:02:35,085 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 19 states have internal predecessors, (65), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) Word has length 145 [2022-07-12 11:02:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:35,087 INFO L225 Difference]: With dead ends: 647 [2022-07-12 11:02:35,087 INFO L226 Difference]: Without dead ends: 645 [2022-07-12 11:02:35,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1454, Unknown=0, NotChecked=0, Total=1640 [2022-07-12 11:02:35,088 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 216 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:35,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 992 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 11:02:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-12 11:02:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 574. [2022-07-12 11:02:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 431 states have (on average 1.0696055684454757) internal successors, (461), 438 states have internal predecessors, (461), 86 states have call successors, (86), 50 states have call predecessors, (86), 56 states have return successors, (109), 85 states have call predecessors, (109), 84 states have call successors, (109) [2022-07-12 11:02:35,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 656 transitions. [2022-07-12 11:02:35,126 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 656 transitions. Word has length 145 [2022-07-12 11:02:35,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:35,126 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 656 transitions. [2022-07-12 11:02:35,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 19 states have internal predecessors, (65), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-12 11:02:35,127 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 656 transitions. [2022-07-12 11:02:35,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 11:02:35,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:35,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:35,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 11:02:35,128 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:35,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1771184407, now seen corresponding path program 1 times [2022-07-12 11:02:35,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:35,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938842267] [2022-07-12 11:02:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:35,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:02:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:02:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:02:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:02:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:02:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:02:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:02:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:02:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 11:02:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 11:02:35,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:35,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938842267] [2022-07-12 11:02:35,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938842267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:35,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:35,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:02:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019461362] [2022-07-12 11:02:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:35,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:02:35,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:35,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:02:35,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:02:35,294 INFO L87 Difference]: Start difference. First operand 574 states and 656 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:02:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:35,595 INFO L93 Difference]: Finished difference Result 690 states and 801 transitions. [2022-07-12 11:02:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:02:35,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2022-07-12 11:02:35,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:35,597 INFO L225 Difference]: With dead ends: 690 [2022-07-12 11:02:35,597 INFO L226 Difference]: Without dead ends: 581 [2022-07-12 11:02:35,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:02:35,598 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 125 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:35,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 237 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:02:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-12 11:02:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2022-07-12 11:02:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 431 states have (on average 1.0649651972157772) internal successors, (459), 437 states have internal predecessors, (459), 83 states have call successors, (83), 50 states have call predecessors, (83), 56 states have return successors, (105), 83 states have call predecessors, (105), 82 states have call successors, (105) [2022-07-12 11:02:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 647 transitions. [2022-07-12 11:02:35,634 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 647 transitions. Word has length 162 [2022-07-12 11:02:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:35,635 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 647 transitions. [2022-07-12 11:02:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 11:02:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 647 transitions. [2022-07-12 11:02:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 11:02:35,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:35,636 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:35,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 11:02:35,636 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash -464359932, now seen corresponding path program 1 times [2022-07-12 11:02:35,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:35,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230948827] [2022-07-12 11:02:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:02:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:02:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 11:02:35,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:02:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:02:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:02:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:02:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:02:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-07-12 11:02:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230948827] [2022-07-12 11:02:35,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230948827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:35,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:35,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:02:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408167173] [2022-07-12 11:02:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:02:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:02:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:02:35,855 INFO L87 Difference]: Start difference. First operand 571 states and 647 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 11:02:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:36,403 INFO L93 Difference]: Finished difference Result 597 states and 681 transitions. [2022-07-12 11:02:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:02:36,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2022-07-12 11:02:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:36,405 INFO L225 Difference]: With dead ends: 597 [2022-07-12 11:02:36,405 INFO L226 Difference]: Without dead ends: 595 [2022-07-12 11:02:36,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:02:36,405 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 148 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:36,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 502 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:02:36,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-12 11:02:36,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 582. [2022-07-12 11:02:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 437 states have (on average 1.0640732265446224) internal successors, (465), 444 states have internal predecessors, (465), 86 states have call successors, (86), 51 states have call predecessors, (86), 58 states have return successors, (112), 86 states have call predecessors, (112), 85 states have call successors, (112) [2022-07-12 11:02:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 663 transitions. [2022-07-12 11:02:36,441 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 663 transitions. Word has length 155 [2022-07-12 11:02:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 663 transitions. [2022-07-12 11:02:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-12 11:02:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 663 transitions. [2022-07-12 11:02:36,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 11:02:36,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:36,443 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-12 11:02:36,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 11:02:36,443 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:36,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1554405041, now seen corresponding path program 1 times [2022-07-12 11:02:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:36,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108792558] [2022-07-12 11:02:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:02:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 11:02:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:02:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:02:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:02:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 11:02:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:02:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:02:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:02:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 11:02:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 11:02:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:02:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:02:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 11:02:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-12 11:02:36,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:36,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108792558] [2022-07-12 11:02:36,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108792558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:36,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:36,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 11:02:36,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344808549] [2022-07-12 11:02:36,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:36,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 11:02:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 11:02:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:02:36,722 INFO L87 Difference]: Start difference. First operand 582 states and 663 transitions. Second operand has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 11:02:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:37,289 INFO L93 Difference]: Finished difference Result 696 states and 817 transitions. [2022-07-12 11:02:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 11:02:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 171 [2022-07-12 11:02:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:37,291 INFO L225 Difference]: With dead ends: 696 [2022-07-12 11:02:37,291 INFO L226 Difference]: Without dead ends: 584 [2022-07-12 11:02:37,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-12 11:02:37,304 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 157 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:37,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 556 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 11:02:37,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-12 11:02:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 583. [2022-07-12 11:02:37,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 438 states have (on average 1.0639269406392695) internal successors, (466), 445 states have internal predecessors, (466), 86 states have call successors, (86), 51 states have call predecessors, (86), 58 states have return successors, (112), 86 states have call predecessors, (112), 85 states have call successors, (112) [2022-07-12 11:02:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 664 transitions. [2022-07-12 11:02:37,348 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 664 transitions. Word has length 171 [2022-07-12 11:02:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:37,348 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 664 transitions. [2022-07-12 11:02:37,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.3) internal successors, (63), 8 states have internal predecessors, (63), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 11:02:37,349 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 664 transitions. [2022-07-12 11:02:37,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 11:02:37,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:37,350 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 11:02:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 11:02:37,351 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:37,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1942137874, now seen corresponding path program 1 times [2022-07-12 11:02:37,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324029710] [2022-07-12 11:02:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:37,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:02:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:02:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:02:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:02:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 11:02:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:37,909 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-12 11:02:37,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:37,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324029710] [2022-07-12 11:02:37,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324029710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:02:37,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:02:37,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 11:02:37,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074873501] [2022-07-12 11:02:37,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:02:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:02:37,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:02:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:02:37,912 INFO L87 Difference]: Start difference. First operand 583 states and 664 transitions. Second operand has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-12 11:02:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:39,224 INFO L93 Difference]: Finished difference Result 610 states and 705 transitions. [2022-07-12 11:02:39,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:02:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 151 [2022-07-12 11:02:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:39,227 INFO L225 Difference]: With dead ends: 610 [2022-07-12 11:02:39,227 INFO L226 Difference]: Without dead ends: 608 [2022-07-12 11:02:39,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:02:39,228 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 210 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:39,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 357 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 11:02:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-07-12 11:02:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 594. [2022-07-12 11:02:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 446 states have (on average 1.0650224215246638) internal successors, (475), 453 states have internal predecessors, (475), 88 states have call successors, (88), 52 states have call predecessors, (88), 59 states have return successors, (114), 88 states have call predecessors, (114), 87 states have call successors, (114) [2022-07-12 11:02:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 677 transitions. [2022-07-12 11:02:39,277 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 677 transitions. Word has length 151 [2022-07-12 11:02:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:39,277 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 677 transitions. [2022-07-12 11:02:39,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 8 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-12 11:02:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 677 transitions. [2022-07-12 11:02:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 11:02:39,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:39,279 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-12 11:02:39,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 11:02:39,280 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:39,280 INFO L85 PathProgramCache]: Analyzing trace with hash -312199031, now seen corresponding path program 1 times [2022-07-12 11:02:39,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:39,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502182712] [2022-07-12 11:02:39,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:39,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:02:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:02:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:02:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:02:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:02:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:02:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:02:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:02:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 11:02:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 55 proven. 18 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-12 11:02:40,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:40,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502182712] [2022-07-12 11:02:40,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502182712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:40,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557690611] [2022-07-12 11:02:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:40,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:40,050 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) [2022-07-12 11:02:40,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-12 11:02:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:40,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 156 conjunts are in the unsatisfiable core [2022-07-12 11:02:40,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:40,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:02:40,783 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:02:40,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:02:40,827 INFO L390 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 [2022-07-12 11:02:40,832 INFO L390 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 [2022-07-12 11:02:41,573 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 11:02:41,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-12 11:02:41,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-07-12 11:02:41,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:02:41,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:02:41,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 11:02:41,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-07-12 11:02:41,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-12 11:02:41,891 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:41,891 INFO L390 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 15 treesize of output 21 [2022-07-12 11:02:41,902 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:41,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-07-12 11:02:41,915 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:02:41,915 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-12 11:02:41,920 INFO L390 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 6 treesize of output 4 [2022-07-12 11:02:42,736 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2508 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_2508) |c_#memory_int|)) (exists ((v_ArrVal_2506 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_memcpy_impl_#in~dst.base| v_ArrVal_2506))) (exists ((v_ArrVal_2507 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_memcpy_impl_#in~dst.base| v_ArrVal_2507)))) is different from true [2022-07-12 11:02:42,759 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2506 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_my_memcpy_#in~dst.base| v_ArrVal_2506))) (exists ((v_ArrVal_2507 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_my_memcpy_#in~dst.base| v_ArrVal_2507))) (exists ((v_ArrVal_2508 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_2508) |c_#memory_int|))) is different from true [2022-07-12 11:02:42,779 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:02:42,780 INFO L390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-12 11:02:42,782 INFO L390 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 12 treesize of output 11 [2022-07-12 11:02:42,784 INFO L390 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 22 treesize of output 24 [2022-07-12 11:02:42,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:42,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:02:42,797 INFO L390 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 [2022-07-12 11:02:42,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:42,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:02:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 56 proven. 149 refuted. 0 times theorem prover too weak. 45 trivial. 1 not checked. [2022-07-12 11:02:43,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:44,210 WARN L833 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_2532 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_aws_byte_buf_write_#t~mem1174.base| v_ArrVal_2532) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 8)) 0)) (forall ((v_ArrVal_2531 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_buf_write_#t~mem1174.base| v_ArrVal_2531) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 8)) 0))) (forall ((v_ArrVal_2530 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1174.base| v_ArrVal_2530) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616) 0)))) is different from false [2022-07-12 11:02:44,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557690611] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:44,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:02:44,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 40] total 61 [2022-07-12 11:02:44,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462943126] [2022-07-12 11:02:44,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:44,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-12 11:02:44,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:44,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-12 11:02:44,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=4049, Unknown=3, NotChecked=390, Total=4692 [2022-07-12 11:02:44,214 INFO L87 Difference]: Start difference. First operand 594 states and 677 transitions. Second operand has 61 states, 55 states have (on average 2.981818181818182) internal successors, (164), 51 states have internal predecessors, (164), 20 states have call successors, (38), 13 states have call predecessors, (38), 14 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-12 11:02:48,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:02:48,004 INFO L93 Difference]: Finished difference Result 750 states and 873 transitions. [2022-07-12 11:02:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-12 11:02:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 55 states have (on average 2.981818181818182) internal successors, (164), 51 states have internal predecessors, (164), 20 states have call successors, (38), 13 states have call predecessors, (38), 14 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) Word has length 156 [2022-07-12 11:02:48,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:02:48,006 INFO L225 Difference]: With dead ends: 750 [2022-07-12 11:02:48,006 INFO L226 Difference]: Without dead ends: 501 [2022-07-12 11:02:48,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 173 SyntacticMatches, 9 SemanticMatches, 109 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=742, Invalid=10794, Unknown=32, NotChecked=642, Total=12210 [2022-07-12 11:02:48,007 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 344 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 6024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1681 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:02:48,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1824 Invalid, 6024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 4066 Invalid, 0 Unknown, 1681 Unchecked, 2.0s Time] [2022-07-12 11:02:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-12 11:02:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 403. [2022-07-12 11:02:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 302 states have (on average 1.0662251655629138) internal successors, (322), 307 states have internal predecessors, (322), 59 states have call successors, (59), 37 states have call predecessors, (59), 41 states have return successors, (72), 58 states have call predecessors, (72), 58 states have call successors, (72) [2022-07-12 11:02:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 453 transitions. [2022-07-12 11:02:48,036 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 453 transitions. Word has length 156 [2022-07-12 11:02:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:02:48,037 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 453 transitions. [2022-07-12 11:02:48,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 55 states have (on average 2.981818181818182) internal successors, (164), 51 states have internal predecessors, (164), 20 states have call successors, (38), 13 states have call predecessors, (38), 14 states have return successors, (35), 17 states have call predecessors, (35), 20 states have call successors, (35) [2022-07-12 11:02:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 453 transitions. [2022-07-12 11:02:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 11:02:48,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:02:48,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:02:48,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-12 11:02:48,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:48,246 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:02:48,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:02:48,246 INFO L85 PathProgramCache]: Analyzing trace with hash 230739894, now seen corresponding path program 1 times [2022-07-12 11:02:48,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:02:48,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100453862] [2022-07-12 11:02:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:48,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:02:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:02:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:02:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:02:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:02:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:02:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:02:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:02:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:02:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:02:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:02:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:02:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:02:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:02:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 11:02:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 11:02:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,291 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 11:02:49,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:02:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100453862] [2022-07-12 11:02:49,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100453862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067462518] [2022-07-12 11:02:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:02:49,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:02:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:02:49,293 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) [2022-07-12 11:02:49,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-12 11:02:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:02:49,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 122 conjunts are in the unsatisfiable core [2022-07-12 11:02:49,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:02:49,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:02:50,156 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 11:02:50,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 11:02:50,164 INFO L390 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 [2022-07-12 11:02:50,552 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-12 11:02:50,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-12 11:02:50,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:50,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:02:50,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2022-07-12 11:02:50,618 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-12 11:02:50,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-12 11:02:51,508 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_40| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_40|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_1|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_40|) 16)))) is different from true [2022-07-12 11:02:52,481 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_41| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_41|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_harness_~#old~0#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_41|) 16)))) is different from true [2022-07-12 11:02:53,573 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1| Int)) (and (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_1|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_1|) 16)))) is different from true [2022-07-12 11:02:54,540 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|) 16)) (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|)))) is different from true [2022-07-12 11:02:54,596 INFO L390 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 26 treesize of output 10 [2022-07-12 11:02:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 21 proven. 55 refuted. 41 times theorem prover too weak. 29 trivial. 34 not checked. [2022-07-12 11:02:54,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:02:55,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067462518] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:02:55,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:02:55,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 30] total 44 [2022-07-12 11:02:55,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574139123] [2022-07-12 11:02:55,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:02:55,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 11:02:55,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:02:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 11:02:55,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1935, Unknown=4, NotChecked=364, Total=2450 [2022-07-12 11:02:55,020 INFO L87 Difference]: Start difference. First operand 403 states and 453 transitions. Second operand has 44 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 17 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 15 states have call predecessors, (32), 16 states have call successors, (32) [2022-07-12 11:04:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:07,768 INFO L93 Difference]: Finished difference Result 487 states and 552 transitions. [2022-07-12 11:04:07,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 11:04:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 17 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 15 states have call predecessors, (32), 16 states have call successors, (32) Word has length 157 [2022-07-12 11:04:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:07,770 INFO L225 Difference]: With dead ends: 487 [2022-07-12 11:04:07,770 INFO L226 Difference]: Without dead ends: 366 [2022-07-12 11:04:07,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 175 SyntacticMatches, 12 SemanticMatches, 83 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 76.2s TimeCoverageRelationStatistics Valid=434, Invalid=6010, Unknown=52, NotChecked=644, Total=7140 [2022-07-12 11:04:07,771 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 221 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1963 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:07,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1173 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1675 Invalid, 0 Unknown, 1963 Unchecked, 1.2s Time] [2022-07-12 11:04:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-12 11:04:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 357. [2022-07-12 11:04:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 268 states have (on average 1.0597014925373134) internal successors, (284), 271 states have internal predecessors, (284), 53 states have call successors, (53), 33 states have call predecessors, (53), 35 states have return successors, (64), 52 states have call predecessors, (64), 52 states have call successors, (64) [2022-07-12 11:04:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 401 transitions. [2022-07-12 11:04:07,803 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 401 transitions. Word has length 157 [2022-07-12 11:04:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:07,803 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 401 transitions. [2022-07-12 11:04:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 17 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 15 states have call predecessors, (32), 16 states have call successors, (32) [2022-07-12 11:04:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 401 transitions. [2022-07-12 11:04:07,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 11:04:07,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:07,805 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 11:04:07,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-12 11:04:08,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-12 11:04:08,023 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:08,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1572610169, now seen corresponding path program 1 times [2022-07-12 11:04:08,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753157711] [2022-07-12 11:04:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:04:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:04:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:04:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:04:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:04:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:04:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 11:04:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 11:04:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 11:04:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:04:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:08,878 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-12 11:04:08,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:08,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753157711] [2022-07-12 11:04:08,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753157711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:08,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:08,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 11:04:08,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731195033] [2022-07-12 11:04:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:08,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 11:04:08,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 11:04:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-12 11:04:08,882 INFO L87 Difference]: Start difference. First operand 357 states and 401 transitions. Second operand has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-12 11:04:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:10,478 INFO L93 Difference]: Finished difference Result 381 states and 439 transitions. [2022-07-12 11:04:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:04:10,478 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 158 [2022-07-12 11:04:10,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:10,480 INFO L225 Difference]: With dead ends: 381 [2022-07-12 11:04:10,480 INFO L226 Difference]: Without dead ends: 379 [2022-07-12 11:04:10,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:04:10,480 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 275 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:10,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 348 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 11:04:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-12 11:04:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 365. [2022-07-12 11:04:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 273 states have (on average 1.0622710622710623) internal successors, (290), 277 states have internal predecessors, (290), 55 states have call successors, (55), 34 states have call predecessors, (55), 36 states have return successors, (66), 53 states have call predecessors, (66), 54 states have call successors, (66) [2022-07-12 11:04:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 411 transitions. [2022-07-12 11:04:10,518 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 411 transitions. Word has length 158 [2022-07-12 11:04:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:10,518 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 411 transitions. [2022-07-12 11:04:10,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.111111111111111) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-12 11:04:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 411 transitions. [2022-07-12 11:04:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 11:04:10,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:10,521 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-12 11:04:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-12 11:04:10,521 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2073053909, now seen corresponding path program 1 times [2022-07-12 11:04:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818571022] [2022-07-12 11:04:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:10,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:04:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:04:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:04:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:04:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:04:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:04:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:04:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:04:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 11:04:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:04:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 11:04:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 11:04:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-12 11:04:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-12 11:04:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818571022] [2022-07-12 11:04:11,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818571022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:11,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138917045] [2022-07-12 11:04:11,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:11,340 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) [2022-07-12 11:04:11,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-12 11:04:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 148 conjunts are in the unsatisfiable core [2022-07-12 11:04:11,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:11,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:04:12,233 INFO L390 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 5 treesize of output 3 [2022-07-12 11:04:12,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:04:12,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 11:04:12,343 INFO L390 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 [2022-07-12 11:04:12,347 INFO L390 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 [2022-07-12 11:04:13,344 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 11:04:13,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-12 11:04:13,417 INFO L390 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 29 treesize of output 29 [2022-07-12 11:04:13,422 INFO L390 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 29 treesize of output 29 [2022-07-12 11:04:25,842 INFO L390 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 29 treesize of output 29 [2022-07-12 11:04:25,845 INFO L390 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 29 treesize of output 29 [2022-07-12 11:04:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:04:25,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-12 11:04:25,916 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:04:25,916 INFO L390 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 27 treesize of output 31 [2022-07-12 11:04:27,961 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_44| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_44|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_44|)) is different from true [2022-07-12 11:04:30,074 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_45| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_45|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_write_u8_~buf#1.base_BEFORE_CALL_45|)) is different from true [2022-07-12 11:04:32,220 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_86 Int)) (< (+ (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_86) 8) 1) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_86)) is different from true