./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_append_dynamic_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:51:57,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:51:57,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:51:57,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:51:57,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:51:57,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:51:57,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:51:57,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:51:57,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:51:57,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:51:57,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:51:57,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:51:57,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:51:57,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:51:57,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:51:57,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:51:57,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:51:57,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:51:57,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:51:57,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:51:57,583 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:51:57,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:51:57,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:51:57,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:51:57,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:51:57,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:51:57,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:51:57,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:51:57,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:51:57,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:51:57,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:51:57,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:51:57,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:51:57,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:51:57,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:51:57,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:51:57,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:51:57,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:51:57,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:51:57,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:51:57,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:51:57,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:51:57,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:51:57,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:51:57,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:51:57,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:51:57,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:51:57,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:51:57,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:51:57,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:51:57,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:51:57,624 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:51:57,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:51:57,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:51:57,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:51:57,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:51:57,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:51:57,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:51:57,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:51:57,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:51:57,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:51:57,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:51:57,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:51:57,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:51:57,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:51:57,628 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:51:57,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:51:57,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:51:57,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-07-12 10:51:57,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:51:57,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:51:57,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:51:57,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:51:57,860 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:51:57,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-07-12 10:51:57,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c20621/3a6cfd366f104122b6b7a21104193fd1/FLAGe9865de22 [2022-07-12 10:51:58,553 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:51:58,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-07-12 10:51:58,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c20621/3a6cfd366f104122b6b7a21104193fd1/FLAGe9865de22 [2022-07-12 10:51:58,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c20621/3a6cfd366f104122b6b7a21104193fd1 [2022-07-12 10:51:58,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:51:58,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:51:58,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:51:58,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:51:58,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:51:58,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:58" (1/1) ... [2022-07-12 10:51:58,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359e20e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:51:58, skipping insertion in model container [2022-07-12 10:51:58,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:51:58" (1/1) ... [2022-07-12 10:51:58,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:51:59,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:51:59,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-07-12 10:51:59,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-07-12 10:51:59,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,818 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,838 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:51:59,839 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,034 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:00,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:00,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:00,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:00,037 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:00,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:00,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:00,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:00,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:00,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:00,114 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:00,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:00,283 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:52:00,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4501,4514] [2022-07-12 10:52:00,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i[4561,4574] [2022-07-12 10:52:00,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,320 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,324 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,325 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,326 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,354 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:00,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:00,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:00,355 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:00,356 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:00,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:00,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:00,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:00,357 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:00,361 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:00,377 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:00,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,446 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,446 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:00,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:00,631 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:52:00,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00 WrapperNode [2022-07-12 10:52:00,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:52:00,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:00,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:52:00,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:52:00,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,775 INFO L137 Inliner]: procedures = 691, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1065 [2022-07-12 10:52:00,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:00,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:52:00,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:52:00,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:52:00,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:52:00,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:52:00,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:52:00,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:52:00,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (1/1) ... [2022-07-12 10:52:00,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:52:00,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:00,912 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 10:52:00,927 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 10:52:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:52:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:52:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 10:52:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 10:52:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:52:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:52:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:52:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 10:52:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 10:52:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:52:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:52:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:52:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:52:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:52:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:52:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:52:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:52:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:52:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:52:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:52:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:52:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:52:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:52:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 10:52:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 10:52:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:52:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:52:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:52:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:52:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:52:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:52:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-12 10:52:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-12 10:52:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:52:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-12 10:52:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-12 10:52:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:52:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:52:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:52:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:52:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-12 10:52:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-12 10:52:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-07-12 10:52:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-07-12 10:52:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 10:52:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 10:52:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:52:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:52:01,155 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:52:01,166 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:52:02,014 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:52:02,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:52:02,022 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 10:52:02,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:02 BoogieIcfgContainer [2022-07-12 10:52:02,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:52:02,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:52:02,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:52:02,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:52:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:51:58" (1/3) ... [2022-07-12 10:52:02,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553c4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:02, skipping insertion in model container [2022-07-12 10:52:02,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:00" (2/3) ... [2022-07-12 10:52:02,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1553c4e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:02, skipping insertion in model container [2022-07-12 10:52:02,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:02" (3/3) ... [2022-07-12 10:52:02,034 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-07-12 10:52:02,044 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:52:02,044 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:52:02,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:52:02,101 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@3427c852, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c2f8767 [2022-07-12 10:52:02,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:52:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-07-12 10:52:02,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 10:52:02,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:02,114 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:02,115 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:02,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1072542744, now seen corresponding path program 1 times [2022-07-12 10:52:02,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:02,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583004529] [2022-07-12 10:52:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:52:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:02,579 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 10:52:02,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:02,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583004529] [2022-07-12 10:52:02,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583004529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:02,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:02,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:52:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238490999] [2022-07-12 10:52:02,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:02,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:52:02,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:52:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:52:02,609 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:02,936 INFO L93 Difference]: Finished difference Result 500 states and 722 transitions. [2022-07-12 10:52:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:52:02,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2022-07-12 10:52:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:02,954 INFO L225 Difference]: With dead ends: 500 [2022-07-12 10:52:02,954 INFO L226 Difference]: Without dead ends: 255 [2022-07-12 10:52:02,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:52:02,960 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 97 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:02,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 403 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-12 10:52:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-07-12 10:52:03,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-12 10:52:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2022-07-12 10:52:03,005 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2022-07-12 10:52:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:03,005 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2022-07-12 10:52:03,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2022-07-12 10:52:03,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 10:52:03,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:03,008 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:52:03,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2014404208, now seen corresponding path program 1 times [2022-07-12 10:52:03,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:03,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231381672] [2022-07-12 10:52:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:52:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:52:03,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231381672] [2022-07-12 10:52:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231381672] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:03,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683161649] [2022-07-12 10:52:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:03,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:03,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:03,323 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 10:52:03,324 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 10:52:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:03,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:52:03,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:03,863 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 10:52:03,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:03,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683161649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:03,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:03,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 10:52:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887546633] [2022-07-12 10:52:03,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:52:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:52:03,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:52:03,871 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:52:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:04,102 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2022-07-12 10:52:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2022-07-12 10:52:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:04,105 INFO L225 Difference]: With dead ends: 478 [2022-07-12 10:52:04,105 INFO L226 Difference]: Without dead ends: 246 [2022-07-12 10:52:04,106 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 10:52:04,106 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 371 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:04,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 963 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-12 10:52:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-12 10:52:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-12 10:52:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2022-07-12 10:52:04,137 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2022-07-12 10:52:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:04,138 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2022-07-12 10:52:04,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:52:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2022-07-12 10:52:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 10:52:04,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:04,144 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:04,167 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 10:52:04,359 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 10:52:04,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:04,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash -756708827, now seen corresponding path program 1 times [2022-07-12 10:52:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:04,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787750890] [2022-07-12 10:52:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:52:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:52:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787750890] [2022-07-12 10:52:04,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787750890] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769003153] [2022-07-12 10:52:04,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:04,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:04,603 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 10:52:04,631 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 10:52:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:04,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:04,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:05,086 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-12 10:52:05,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:05,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769003153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:05,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:05,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-12 10:52:05,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918868174] [2022-07-12 10:52:05,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:05,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:52:05,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:05,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:52:05,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:05,088 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:05,383 INFO L93 Difference]: Finished difference Result 469 states and 634 transitions. [2022-07-12 10:52:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2022-07-12 10:52:05,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:05,385 INFO L225 Difference]: With dead ends: 469 [2022-07-12 10:52:05,385 INFO L226 Difference]: Without dead ends: 243 [2022-07-12 10:52:05,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:05,387 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 429 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:05,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1122 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:05,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-12 10:52:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-07-12 10:52:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 153 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-12 10:52:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2022-07-12 10:52:05,399 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 91 [2022-07-12 10:52:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:05,400 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2022-07-12 10:52:05,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2022-07-12 10:52:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 10:52:05,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:05,401 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:05,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:05,615 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 10:52:05,615 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1459419536, now seen corresponding path program 1 times [2022-07-12 10:52:05,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:05,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549213113] [2022-07-12 10:52:05,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:05,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:52:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:52:05,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549213113] [2022-07-12 10:52:05,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549213113] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:05,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211566697] [2022-07-12 10:52:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:05,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:05,826 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 10:52:05,827 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 10:52:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:06,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:52:06,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 10:52:06,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:52:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:52:06,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211566697] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:52:06,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:52:06,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-12 10:52:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726999405] [2022-07-12 10:52:06,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:52:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:52:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:52:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:52:06,399 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-12 10:52:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:06,941 INFO L93 Difference]: Finished difference Result 481 states and 648 transitions. [2022-07-12 10:52:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 97 [2022-07-12 10:52:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:06,943 INFO L225 Difference]: With dead ends: 481 [2022-07-12 10:52:06,943 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 10:52:06,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:52:06,945 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 456 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:06,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 716 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:52:06,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 10:52:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2022-07-12 10:52:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-12 10:52:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2022-07-12 10:52:06,956 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 97 [2022-07-12 10:52:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:06,956 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2022-07-12 10:52:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-12 10:52:06,957 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2022-07-12 10:52:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 10:52:06,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:06,957 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:06,979 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 10:52:07,175 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 10:52:07,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:07,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2034657995, now seen corresponding path program 1 times [2022-07-12 10:52:07,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:07,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055261399] [2022-07-12 10:52:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:07,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:52:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:52:07,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:07,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055261399] [2022-07-12 10:52:07,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055261399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:07,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:07,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:52:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554596051] [2022-07-12 10:52:07,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:07,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:52:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:52:07,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:52:07,434 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:07,897 INFO L93 Difference]: Finished difference Result 478 states and 642 transitions. [2022-07-12 10:52:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2022-07-12 10:52:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:07,899 INFO L225 Difference]: With dead ends: 478 [2022-07-12 10:52:07,899 INFO L226 Difference]: Without dead ends: 255 [2022-07-12 10:52:07,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:52:07,900 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 239 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:07,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 702 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:52:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-12 10:52:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-07-12 10:52:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-12 10:52:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2022-07-12 10:52:07,910 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 99 [2022-07-12 10:52:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:07,911 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2022-07-12 10:52:07,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2022-07-12 10:52:07,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 10:52:07,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:07,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:52:07,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1162403066, now seen corresponding path program 1 times [2022-07-12 10:52:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:07,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391645244] [2022-07-12 10:52:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:08,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:52:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:08,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391645244] [2022-07-12 10:52:08,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391645244] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:08,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781885127] [2022-07-12 10:52:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:08,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:08,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:08,309 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 10:52:08,310 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 10:52:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:08,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:52:08,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:08,720 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 10:52:09,184 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 10:52:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:52:09,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:52:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:52:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781885127] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:52:09,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:52:09,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2022-07-12 10:52:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005883546] [2022-07-12 10:52:09,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:52:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:52:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:52:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:52:09,327 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-12 10:52:11,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:11,213 INFO L93 Difference]: Finished difference Result 608 states and 831 transitions. [2022-07-12 10:52:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:52:11,214 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 101 [2022-07-12 10:52:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:11,216 INFO L225 Difference]: With dead ends: 608 [2022-07-12 10:52:11,216 INFO L226 Difference]: Without dead ends: 401 [2022-07-12 10:52:11,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 208 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 10:52:11,218 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 285 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 589 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:11,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1858 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2369 Invalid, 0 Unknown, 589 Unchecked, 1.5s Time] [2022-07-12 10:52:11,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-12 10:52:11,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 290. [2022-07-12 10:52:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.2063492063492063) internal successors, (228), 190 states have internal predecessors, (228), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2022-07-12 10:52:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 391 transitions. [2022-07-12 10:52:11,242 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 391 transitions. Word has length 101 [2022-07-12 10:52:11,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:11,242 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 391 transitions. [2022-07-12 10:52:11,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-12 10:52:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 391 transitions. [2022-07-12 10:52:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 10:52:11,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:11,243 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:11,265 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 10:52:11,451 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 10:52:11,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:11,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:11,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1694138625, now seen corresponding path program 1 times [2022-07-12 10:52:11,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026796839] [2022-07-12 10:52:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 10:52:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:11,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026796839] [2022-07-12 10:52:11,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026796839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:11,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:11,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:52:11,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228964104] [2022-07-12 10:52:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:52:11,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:11,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:52:11,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:52:11,652 INFO L87 Difference]: Start difference. First operand 290 states and 391 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:52:12,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:12,234 INFO L93 Difference]: Finished difference Result 399 states and 531 transitions. [2022-07-12 10:52:12,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:12,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-07-12 10:52:12,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:12,238 INFO L225 Difference]: With dead ends: 399 [2022-07-12 10:52:12,238 INFO L226 Difference]: Without dead ends: 328 [2022-07-12 10:52:12,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:12,239 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 210 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:12,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1056 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:52:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-12 10:52:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 292. [2022-07-12 10:52:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2022-07-12 10:52:12,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 393 transitions. [2022-07-12 10:52:12,257 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 393 transitions. Word has length 105 [2022-07-12 10:52:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:12,259 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 393 transitions. [2022-07-12 10:52:12,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:52:12,259 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 393 transitions. [2022-07-12 10:52:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 10:52:12,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:12,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:12,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:52:12,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:12,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1159574532, now seen corresponding path program 1 times [2022-07-12 10:52:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:12,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144298155] [2022-07-12 10:52:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-12 10:52:13,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:13,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144298155] [2022-07-12 10:52:13,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144298155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:13,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:13,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:52:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151299378] [2022-07-12 10:52:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:13,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:52:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:13,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:52:13,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:52:13,013 INFO L87 Difference]: Start difference. First operand 292 states and 393 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:52:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:14,827 INFO L93 Difference]: Finished difference Result 685 states and 954 transitions. [2022-07-12 10:52:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:52:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-07-12 10:52:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:14,830 INFO L225 Difference]: With dead ends: 685 [2022-07-12 10:52:14,830 INFO L226 Difference]: Without dead ends: 400 [2022-07-12 10:52:14,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:52:14,832 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 525 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 2988 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 2988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:14,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1262 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 2988 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 10:52:14,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-12 10:52:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 314. [2022-07-12 10:52:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 204 states have (on average 1.1911764705882353) internal successors, (243), 207 states have internal predecessors, (243), 86 states have call successors, (86), 21 states have call predecessors, (86), 23 states have return successors, (99), 85 states have call predecessors, (99), 85 states have call successors, (99) [2022-07-12 10:52:14,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 428 transitions. [2022-07-12 10:52:14,852 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 428 transitions. Word has length 107 [2022-07-12 10:52:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:14,852 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 428 transitions. [2022-07-12 10:52:14,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:52:14,853 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 428 transitions. [2022-07-12 10:52:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 10:52:14,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:14,853 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:52:14,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 64245244, now seen corresponding path program 1 times [2022-07-12 10:52:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171267821] [2022-07-12 10:52:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 10:52:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 10:52:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:52:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:52:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 10:52:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171267821] [2022-07-12 10:52:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171267821] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110731046] [2022-07-12 10:52:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:15,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:15,126 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 10:52:15,127 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 10:52:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:15,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:15,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 10:52:15,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:15,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110731046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:15,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:15,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-12 10:52:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203891731] [2022-07-12 10:52:15,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:52:15,567 INFO L87 Difference]: Start difference. First operand 314 states and 428 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:52:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:15,729 INFO L93 Difference]: Finished difference Result 649 states and 903 transitions. [2022-07-12 10:52:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-07-12 10:52:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:15,730 INFO L225 Difference]: With dead ends: 649 [2022-07-12 10:52:15,731 INFO L226 Difference]: Without dead ends: 346 [2022-07-12 10:52:15,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:15,732 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 40 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:15,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1169 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-07-12 10:52:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-12 10:52:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 324. [2022-07-12 10:52:15,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 217 states have internal predecessors, (256), 86 states have call successors, (86), 21 states have call predecessors, (86), 23 states have return successors, (99), 85 states have call predecessors, (99), 85 states have call successors, (99) [2022-07-12 10:52:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 441 transitions. [2022-07-12 10:52:15,752 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 441 transitions. Word has length 115 [2022-07-12 10:52:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:15,752 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 441 transitions. [2022-07-12 10:52:15,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:52:15,752 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 441 transitions. [2022-07-12 10:52:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 10:52:15,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:15,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:15,776 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 10:52:15,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:15,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:15,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1723548476, now seen corresponding path program 1 times [2022-07-12 10:52:15,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:15,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984532165] [2022-07-12 10:52:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 10:52:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 10:52:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:52:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:52:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 10:52:16,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:16,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984532165] [2022-07-12 10:52:16,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984532165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:16,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:16,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:52:16,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319548625] [2022-07-12 10:52:16,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:16,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:52:16,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:16,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:52:16,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:52:16,343 INFO L87 Difference]: Start difference. First operand 324 states and 441 transitions. Second operand has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 10:52:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:17,947 INFO L93 Difference]: Finished difference Result 434 states and 616 transitions. [2022-07-12 10:52:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:52:17,947 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 115 [2022-07-12 10:52:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:17,950 INFO L225 Difference]: With dead ends: 434 [2022-07-12 10:52:17,950 INFO L226 Difference]: Without dead ends: 432 [2022-07-12 10:52:17,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:52:17,951 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 563 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:17,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1267 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 10:52:17,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-12 10:52:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 340. [2022-07-12 10:52:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 223 states have (on average 1.1928251121076232) internal successors, (266), 227 states have internal predecessors, (266), 91 states have call successors, (91), 23 states have call predecessors, (91), 25 states have return successors, (104), 89 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-12 10:52:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 461 transitions. [2022-07-12 10:52:17,971 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 461 transitions. Word has length 115 [2022-07-12 10:52:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:17,972 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 461 transitions. [2022-07-12 10:52:17,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-12 10:52:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 461 transitions. [2022-07-12 10:52:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 10:52:17,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:17,973 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:17,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:52:17,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash -587369526, now seen corresponding path program 1 times [2022-07-12 10:52:17,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:17,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304706807] [2022-07-12 10:52:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 10:52:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 10:52:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:52:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:52:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:52:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 10:52:18,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304706807] [2022-07-12 10:52:18,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304706807] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030243199] [2022-07-12 10:52:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:18,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:18,190 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 10:52:18,197 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 10:52:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:18,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-12 10:52:18,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:52:18,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:18,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030243199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:18,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:18,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 10:52:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35152195] [2022-07-12 10:52:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:18,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:18,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:18,613 INFO L87 Difference]: Start difference. First operand 340 states and 461 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:52:18,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:18,762 INFO L93 Difference]: Finished difference Result 679 states and 924 transitions. [2022-07-12 10:52:18,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:18,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-07-12 10:52:18,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:18,764 INFO L225 Difference]: With dead ends: 679 [2022-07-12 10:52:18,764 INFO L226 Difference]: Without dead ends: 350 [2022-07-12 10:52:18,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:52:18,766 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 12 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:18,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2442 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:52:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-12 10:52:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2022-07-12 10:52:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 227 states have (on average 1.1894273127753303) internal successors, (270), 232 states have internal predecessors, (270), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-12 10:52:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 473 transitions. [2022-07-12 10:52:18,786 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 473 transitions. Word has length 117 [2022-07-12 10:52:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:18,786 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 473 transitions. [2022-07-12 10:52:18,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 10:52:18,786 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 473 transitions. [2022-07-12 10:52:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 10:52:18,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:18,787 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:18,809 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 10:52:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:18,999 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1600716835, now seen corresponding path program 1 times [2022-07-12 10:52:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147397743] [2022-07-12 10:52:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:52:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:52:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 10:52:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147397743] [2022-07-12 10:52:19,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147397743] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602554173] [2022-07-12 10:52:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:19,130 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 10:52:19,131 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 10:52:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:52:19,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:19,540 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 10:52:19,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:19,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602554173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:19,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:19,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:52:19,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283589591] [2022-07-12 10:52:19,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:52:19,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:19,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:52:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:19,543 INFO L87 Difference]: Start difference. First operand 345 states and 473 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:19,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:19,572 INFO L93 Difference]: Finished difference Result 692 states and 955 transitions. [2022-07-12 10:52:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:19,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-12 10:52:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:19,574 INFO L225 Difference]: With dead ends: 692 [2022-07-12 10:52:19,574 INFO L226 Difference]: Without dead ends: 358 [2022-07-12 10:52:19,575 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 10:52:19,576 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 9 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 966 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 10:52:19,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 966 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:52:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-12 10:52:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2022-07-12 10:52:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 231 states have (on average 1.1861471861471862) internal successors, (274), 236 states have internal predecessors, (274), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-12 10:52:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 477 transitions. [2022-07-12 10:52:19,594 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 477 transitions. Word has length 119 [2022-07-12 10:52:19,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:19,594 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 477 transitions. [2022-07-12 10:52:19,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 477 transitions. [2022-07-12 10:52:19,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 10:52:19,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:19,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:19,619 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 10:52:19,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:19,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:19,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1810399649, now seen corresponding path program 1 times [2022-07-12 10:52:19,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:19,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293809734] [2022-07-12 10:52:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:52:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:52:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 10:52:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293809734] [2022-07-12 10:52:19,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293809734] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:19,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875301233] [2022-07-12 10:52:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:19,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:19,956 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 10:52:19,957 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 10:52:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:52:20,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 10:52:20,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:20,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875301233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:20,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:20,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:52:20,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654712275] [2022-07-12 10:52:20,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:20,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:52:20,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:52:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:20,348 INFO L87 Difference]: Start difference. First operand 349 states and 477 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:20,377 INFO L93 Difference]: Finished difference Result 717 states and 992 transitions. [2022-07-12 10:52:20,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-12 10:52:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:20,380 INFO L225 Difference]: With dead ends: 717 [2022-07-12 10:52:20,380 INFO L226 Difference]: Without dead ends: 379 [2022-07-12 10:52:20,381 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 10:52:20,383 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 28 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:20,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:52:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-12 10:52:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 349. [2022-07-12 10:52:20,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 231 states have (on average 1.1774891774891776) internal successors, (272), 236 states have internal predecessors, (272), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-12 10:52:20,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 475 transitions. [2022-07-12 10:52:20,425 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 475 transitions. Word has length 119 [2022-07-12 10:52:20,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:20,426 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 475 transitions. [2022-07-12 10:52:20,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:20,426 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 475 transitions. [2022-07-12 10:52:20,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 10:52:20,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:20,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:20,455 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 10:52:20,648 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,SelfDestructingSolverStorable12 [2022-07-12 10:52:20,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:20,648 INFO L85 PathProgramCache]: Analyzing trace with hash 865592733, now seen corresponding path program 1 times [2022-07-12 10:52:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:20,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100963315] [2022-07-12 10:52:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:52:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:52:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 10:52:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:20,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100963315] [2022-07-12 10:52:20,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100963315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:20,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565187609] [2022-07-12 10:52:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:20,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:20,944 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 10:52:20,945 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 10:52:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-12 10:52:21,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:21,365 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 10:52:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:21,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:21,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565187609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:21,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:21,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [10] total 23 [2022-07-12 10:52:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963846120] [2022-07-12 10:52:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:21,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 10:52:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 10:52:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:52:21,705 INFO L87 Difference]: Start difference. First operand 349 states and 475 transitions. Second operand has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:52:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:22,050 INFO L93 Difference]: Finished difference Result 679 states and 922 transitions. [2022-07-12 10:52:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 10:52:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 119 [2022-07-12 10:52:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:22,052 INFO L225 Difference]: With dead ends: 679 [2022-07-12 10:52:22,052 INFO L226 Difference]: Without dead ends: 381 [2022-07-12 10:52:22,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:52:22,054 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 36 mSDsluCounter, 5384 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:22,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 5707 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 393 Invalid, 0 Unknown, 475 Unchecked, 0.2s Time] [2022-07-12 10:52:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-12 10:52:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 366. [2022-07-12 10:52:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 247 states have (on average 1.174089068825911) internal successors, (290), 252 states have internal predecessors, (290), 91 states have call successors, (91), 24 states have call predecessors, (91), 27 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-12 10:52:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 493 transitions. [2022-07-12 10:52:22,071 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 493 transitions. Word has length 119 [2022-07-12 10:52:22,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:22,071 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 493 transitions. [2022-07-12 10:52:22,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-12 10:52:22,072 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 493 transitions. [2022-07-12 10:52:22,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 10:52:22,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:22,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:22,094 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 10:52:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 10:52:22,291 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash -974126782, now seen corresponding path program 1 times [2022-07-12 10:52:22,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:22,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198177133] [2022-07-12 10:52:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:52:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:52:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 10:52:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198177133] [2022-07-12 10:52:22,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198177133] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573930025] [2022-07-12 10:52:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:22,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:22,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:22,516 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 10:52:22,517 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 10:52:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:22,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:22,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 10:52:22,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:22,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573930025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:22,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:22,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-12 10:52:22,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449305712] [2022-07-12 10:52:22,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:22,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:52:22,972 INFO L87 Difference]: Start difference. First operand 366 states and 493 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:23,131 INFO L93 Difference]: Finished difference Result 653 states and 894 transitions. [2022-07-12 10:52:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-12 10:52:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:23,133 INFO L225 Difference]: With dead ends: 653 [2022-07-12 10:52:23,134 INFO L226 Difference]: Without dead ends: 366 [2022-07-12 10:52:23,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:23,137 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 17 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:23,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1169 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-07-12 10:52:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-12 10:52:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-07-12 10:52:23,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 247 states have (on average 1.1700404858299596) internal successors, (289), 252 states have internal predecessors, (289), 91 states have call successors, (91), 24 states have call predecessors, (91), 27 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-12 10:52:23,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 492 transitions. [2022-07-12 10:52:23,155 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 492 transitions. Word has length 121 [2022-07-12 10:52:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:23,156 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 492 transitions. [2022-07-12 10:52:23,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 492 transitions. [2022-07-12 10:52:23,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 10:52:23,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:23,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:23,179 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 10:52:23,371 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,SelfDestructingSolverStorable14 [2022-07-12 10:52:23,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1391523388, now seen corresponding path program 1 times [2022-07-12 10:52:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:23,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471505282] [2022-07-12 10:52:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:23,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:52:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:52:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:23,605 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 10:52:23,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471505282] [2022-07-12 10:52:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471505282] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801616630] [2022-07-12 10:52:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:23,606 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 10:52:23,608 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 10:52:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-12 10:52:24,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:30,126 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:36,163 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:42,210 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:48,252 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:54,301 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 10:52:54,367 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 10:52:54,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:54,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801616630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:54,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:54,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10] total 20 [2022-07-12 10:52:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933343718] [2022-07-12 10:52:54,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:54,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 10:52:54,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:54,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 10:52:54,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:52:54,369 INFO L87 Difference]: Start difference. First operand 366 states and 492 transitions. Second operand has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:54,907 INFO L93 Difference]: Finished difference Result 691 states and 940 transitions. [2022-07-12 10:52:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:52:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-07-12 10:52:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:54,909 INFO L225 Difference]: With dead ends: 691 [2022-07-12 10:52:54,910 INFO L226 Difference]: Without dead ends: 380 [2022-07-12 10:52:54,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:52:54,911 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 32 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 5018 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 5018 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 527 Invalid, 0 Unknown, 341 Unchecked, 0.3s Time] [2022-07-12 10:52:54,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-07-12 10:52:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 364. [2022-07-12 10:52:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 250 states have internal predecessors, (282), 91 states have call successors, (91), 24 states have call predecessors, (91), 28 states have return successors, (119), 89 states have call predecessors, (119), 90 states have call successors, (119) [2022-07-12 10:52:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 492 transitions. [2022-07-12 10:52:54,930 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 492 transitions. Word has length 121 [2022-07-12 10:52:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:54,930 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 492 transitions. [2022-07-12 10:52:54,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-12 10:52:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 492 transitions. [2022-07-12 10:52:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 10:52:54,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:54,932 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:54,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:55,151 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,SelfDestructingSolverStorable15 [2022-07-12 10:52:55,152 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:55,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:55,152 INFO L85 PathProgramCache]: Analyzing trace with hash 862515409, now seen corresponding path program 1 times [2022-07-12 10:52:55,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:55,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129208708] [2022-07-12 10:52:55,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:52:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 10:52:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 10:52:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129208708] [2022-07-12 10:52:55,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129208708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:55,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:55,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:52:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191865604] [2022-07-12 10:52:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:52:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:52:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:52:55,395 INFO L87 Difference]: Start difference. First operand 364 states and 492 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:56,093 INFO L93 Difference]: Finished difference Result 662 states and 897 transitions. [2022-07-12 10:52:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:52:56,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-07-12 10:52:56,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:56,095 INFO L225 Difference]: With dead ends: 662 [2022-07-12 10:52:56,095 INFO L226 Difference]: Without dead ends: 376 [2022-07-12 10:52:56,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:52:56,096 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 105 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:56,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1562 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:52:56,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-12 10:52:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2022-07-12 10:52:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 250 states have internal predecessors, (282), 91 states have call successors, (91), 24 states have call predecessors, (91), 28 states have return successors, (117), 89 states have call predecessors, (117), 90 states have call successors, (117) [2022-07-12 10:52:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 490 transitions. [2022-07-12 10:52:56,115 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 490 transitions. Word has length 123 [2022-07-12 10:52:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:56,115 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 490 transitions. [2022-07-12 10:52:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:52:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 490 transitions. [2022-07-12 10:52:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 10:52:56,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:56,116 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:52:56,117 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1506302913, now seen corresponding path program 1 times [2022-07-12 10:52:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:56,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954059114] [2022-07-12 10:52:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:52:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:52:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:52:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 10:52:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-12 10:52:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954059114] [2022-07-12 10:52:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954059114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:56,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:56,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-12 10:52:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493005478] [2022-07-12 10:52:56,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 10:52:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:56,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 10:52:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:56,728 INFO L87 Difference]: Start difference. First operand 364 states and 490 transitions. Second operand has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:52:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:58,131 INFO L93 Difference]: Finished difference Result 460 states and 651 transitions. [2022-07-12 10:52:58,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:52:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 128 [2022-07-12 10:52:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:58,135 INFO L225 Difference]: With dead ends: 460 [2022-07-12 10:52:58,135 INFO L226 Difference]: Without dead ends: 458 [2022-07-12 10:52:58,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:52:58,136 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 443 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:58,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1135 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 10:52:58,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-12 10:52:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 370. [2022-07-12 10:52:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 248 states have (on average 1.153225806451613) internal successors, (286), 254 states have internal predecessors, (286), 92 states have call successors, (92), 25 states have call predecessors, (92), 29 states have return successors, (118), 90 states have call predecessors, (118), 91 states have call successors, (118) [2022-07-12 10:52:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 496 transitions. [2022-07-12 10:52:58,156 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 496 transitions. Word has length 128 [2022-07-12 10:52:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:58,156 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 496 transitions. [2022-07-12 10:52:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-12 10:52:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 496 transitions. [2022-07-12 10:52:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 10:52:58,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:58,157 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:58,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:52:58,158 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1465929288, now seen corresponding path program 1 times [2022-07-12 10:52:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:58,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052239647] [2022-07-12 10:52:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:52:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:52:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:52:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 10:52:58,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:58,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052239647] [2022-07-12 10:52:58,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052239647] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:58,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935775156] [2022-07-12 10:52:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:58,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:58,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:58,577 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 10:52:58,603 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 10:52:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:58,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-12 10:52:58,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:59,030 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 10:52:59,033 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 10:52:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 10:52:59,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:59,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935775156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:59,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:59,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-12 10:52:59,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516157234] [2022-07-12 10:52:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:59,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:52:59,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:52:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:52:59,605 INFO L87 Difference]: Start difference. First operand 370 states and 496 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 10:52:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:59,730 INFO L93 Difference]: Finished difference Result 887 states and 1222 transitions. [2022-07-12 10:52:59,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:52:59,731 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2022-07-12 10:52:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:59,735 INFO L225 Difference]: With dead ends: 887 [2022-07-12 10:52:59,735 INFO L226 Difference]: Without dead ends: 579 [2022-07-12 10:52:59,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 131 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:52:59,737 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 81 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:59,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2232 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-07-12 10:52:59,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-07-12 10:52:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 460. [2022-07-12 10:52:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 321 states have (on average 1.1401869158878504) internal successors, (366), 330 states have internal predecessors, (366), 101 states have call successors, (101), 31 states have call predecessors, (101), 37 states have return successors, (131), 98 states have call predecessors, (131), 100 states have call successors, (131) [2022-07-12 10:52:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 598 transitions. [2022-07-12 10:52:59,762 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 598 transitions. Word has length 125 [2022-07-12 10:52:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:59,763 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 598 transitions. [2022-07-12 10:52:59,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-12 10:52:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 598 transitions. [2022-07-12 10:52:59,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 10:52:59,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:59,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:52:59,783 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 10:52:59,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:59,979 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1403889674, now seen corresponding path program 1 times [2022-07-12 10:52:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:59,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805462002] [2022-07-12 10:52:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:59,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:00,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:53:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:53:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:53:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 10:53:00,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805462002] [2022-07-12 10:53:00,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805462002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:00,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:53:00,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:53:00,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205600224] [2022-07-12 10:53:00,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:00,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:53:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:53:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:53:00,123 INFO L87 Difference]: Start difference. First operand 460 states and 598 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:53:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:00,460 INFO L93 Difference]: Finished difference Result 821 states and 1087 transitions. [2022-07-12 10:53:00,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:53:00,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-12 10:53:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:00,462 INFO L225 Difference]: With dead ends: 821 [2022-07-12 10:53:00,462 INFO L226 Difference]: Without dead ends: 468 [2022-07-12 10:53:00,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:53:00,464 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 101 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:00,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 735 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:53:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-12 10:53:00,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 453. [2022-07-12 10:53:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 315 states have (on average 1.1365079365079365) internal successors, (358), 323 states have internal predecessors, (358), 101 states have call successors, (101), 31 states have call predecessors, (101), 36 states have return successors, (128), 98 states have call predecessors, (128), 100 states have call successors, (128) [2022-07-12 10:53:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 587 transitions. [2022-07-12 10:53:00,486 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 587 transitions. Word has length 125 [2022-07-12 10:53:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:00,486 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 587 transitions. [2022-07-12 10:53:00,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 10:53:00,487 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 587 transitions. [2022-07-12 10:53:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:53:00,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:00,488 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:53:00,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:53:00,489 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:00,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash -984995464, now seen corresponding path program 1 times [2022-07-12 10:53:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:00,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24279696] [2022-07-12 10:53:00,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:53:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:53:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:53:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:53:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 10:53:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24279696] [2022-07-12 10:53:00,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24279696] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586690082] [2022-07-12 10:53:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:00,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:00,903 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 10:53:00,904 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 10:53:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:01,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-12 10:53:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:01,316 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 10:53:01,319 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 10:53:01,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:01,424 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 23 treesize of output 22 [2022-07-12 10:53:01,429 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 10:53:01,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:01,431 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 23 treesize of output 22 [2022-07-12 10:53:01,980 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:53:01,980 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 16 treesize of output 22 [2022-07-12 10:53:01,986 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 7 treesize of output 3 [2022-07-12 10:53:01,997 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:53:01,998 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 16 treesize of output 22 [2022-07-12 10:53:02,002 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 7 treesize of output 3 [2022-07-12 10:53:02,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:02,021 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 10:53:02,727 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 19 treesize of output 11 [2022-07-12 10:53:02,733 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 19 treesize of output 11 [2022-07-12 10:53:02,816 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 10:53:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 37 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:53:02,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:03,127 WARN L833 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1271 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1271) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)) (forall ((v_ArrVal_1269 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1269) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0))) (forall ((v_ArrVal_1272 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1272)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.offset|) 18446744073709551616) 0)))) is different from false [2022-07-12 10:53:03,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586690082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:03,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:53:03,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-07-12 10:53:03,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552463099] [2022-07-12 10:53:03,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:03,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 10:53:03,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:03,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 10:53:03,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2022-07-12 10:53:03,145 INFO L87 Difference]: Start difference. First operand 453 states and 587 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-12 10:53:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:07,956 INFO L93 Difference]: Finished difference Result 1210 states and 1740 transitions. [2022-07-12 10:53:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-12 10:53:07,957 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 130 [2022-07-12 10:53:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:07,962 INFO L225 Difference]: With dead ends: 1210 [2022-07-12 10:53:07,962 INFO L226 Difference]: Without dead ends: 1099 [2022-07-12 10:53:07,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 209 SyntacticMatches, 17 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=358, Invalid=3677, Unknown=1, NotChecked=124, Total=4160 [2022-07-12 10:53:07,964 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 348 mSDsluCounter, 5649 mSDsCounter, 0 mSdLazyCounter, 6579 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 6270 SdHoareTripleChecker+Invalid, 8636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 6579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1847 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:07,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 6270 Invalid, 8636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 6579 Invalid, 0 Unknown, 1847 Unchecked, 3.9s Time] [2022-07-12 10:53:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-07-12 10:53:08,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 723. [2022-07-12 10:53:08,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 523 states have (on average 1.124282982791587) internal successors, (588), 536 states have internal predecessors, (588), 140 states have call successors, (140), 48 states have call predecessors, (140), 59 states have return successors, (198), 138 states have call predecessors, (198), 139 states have call successors, (198) [2022-07-12 10:53:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 926 transitions. [2022-07-12 10:53:08,019 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 926 transitions. Word has length 130 [2022-07-12 10:53:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:08,019 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 926 transitions. [2022-07-12 10:53:08,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-12 10:53:08,020 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 926 transitions. [2022-07-12 10:53:08,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:53:08,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:08,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:53:08,045 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 10:53:08,237 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,SelfDestructingSolverStorable20 [2022-07-12 10:53:08,237 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1861014470, now seen corresponding path program 1 times [2022-07-12 10:53:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:08,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635511797] [2022-07-12 10:53:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:53:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:53:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:53:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:53:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 10:53:08,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635511797] [2022-07-12 10:53:08,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635511797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:08,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718092645] [2022-07-12 10:53:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:08,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:08,601 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 10:53:08,602 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 10:53:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:08,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-12 10:53:08,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:08,982 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 10:53:09,083 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:53:09,084 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 10:53:09,356 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 10:53:09,356 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 10:53:11,490 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 17 treesize of output 19 [2022-07-12 10:53:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 69 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:53:17,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:18,028 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1365 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1365) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset|))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ .cse0 (- 1)) 18446744073709551616)))))) is different from false [2022-07-12 10:53:18,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718092645] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:18,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:53:18,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18] total 29 [2022-07-12 10:53:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168698328] [2022-07-12 10:53:18,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 10:53:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 10:53:18,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=769, Unknown=2, NotChecked=56, Total=930 [2022-07-12 10:53:18,036 INFO L87 Difference]: Start difference. First operand 723 states and 926 transitions. Second operand has 29 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 13 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 10 states have call predecessors, (26), 13 states have call successors, (26) [2022-07-12 10:53:21,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:21,207 INFO L93 Difference]: Finished difference Result 1473 states and 2076 transitions. [2022-07-12 10:53:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-12 10:53:21,209 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 13 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 10 states have call predecessors, (26), 13 states have call successors, (26) Word has length 130 [2022-07-12 10:53:21,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:21,214 INFO L225 Difference]: With dead ends: 1473 [2022-07-12 10:53:21,214 INFO L226 Difference]: Without dead ends: 1257 [2022-07-12 10:53:21,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 226 SyntacticMatches, 12 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=341, Invalid=2853, Unknown=2, NotChecked=110, Total=3306 [2022-07-12 10:53:21,216 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 405 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 4131 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 4952 SdHoareTripleChecker+Invalid, 8500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 4131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3971 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:21,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 4952 Invalid, 8500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 4131 Invalid, 0 Unknown, 3971 Unchecked, 2.4s Time] [2022-07-12 10:53:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-07-12 10:53:21,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 822. [2022-07-12 10:53:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 595 states have (on average 1.1126050420168068) internal successors, (662), 606 states have internal predecessors, (662), 159 states have call successors, (159), 57 states have call predecessors, (159), 67 states have return successors, (219), 158 states have call predecessors, (219), 158 states have call successors, (219) [2022-07-12 10:53:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1040 transitions. [2022-07-12 10:53:21,276 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1040 transitions. Word has length 130 [2022-07-12 10:53:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:21,276 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1040 transitions. [2022-07-12 10:53:21,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.851851851851852) internal successors, (158), 27 states have internal predecessors, (158), 13 states have call successors, (27), 7 states have call predecessors, (27), 10 states have return successors, (26), 10 states have call predecessors, (26), 13 states have call successors, (26) [2022-07-12 10:53:21,276 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1040 transitions. [2022-07-12 10:53:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 10:53:21,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:21,278 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:53:21,303 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 10:53:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:21,491 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 999067256, now seen corresponding path program 1 times [2022-07-12 10:53:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:21,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239283464] [2022-07-12 10:53:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:53:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:53:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:53:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 10:53:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 10:53:21,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:21,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239283464] [2022-07-12 10:53:21,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239283464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:21,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351653343] [2022-07-12 10:53:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:21,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:21,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:21,914 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 10:53:21,923 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 10:53:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:22,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-12 10:53:22,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:22,342 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 10:53:22,346 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 10:53:22,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:22,453 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 23 treesize of output 22 [2022-07-12 10:53:22,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:22,461 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 23 treesize of output 22 [2022-07-12 10:53:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:22,733 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 10:53:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:22,736 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 10:53:23,216 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 15 treesize of output 7 [2022-07-12 10:53:23,218 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 15 treesize of output 7 [2022-07-12 10:53:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 10:53:23,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:53:23,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351653343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:23,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:53:23,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2022-07-12 10:53:23,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090705335] [2022-07-12 10:53:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:53:23,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:53:23,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:53:23,240 INFO L87 Difference]: Start difference. First operand 822 states and 1040 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:53:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:23,735 INFO L93 Difference]: Finished difference Result 1311 states and 1733 transitions. [2022-07-12 10:53:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:53:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 130 [2022-07-12 10:53:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:23,740 INFO L225 Difference]: With dead ends: 1311 [2022-07-12 10:53:23,740 INFO L226 Difference]: Without dead ends: 1155 [2022-07-12 10:53:23,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:53:23,741 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 106 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:23,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 3290 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 487 Invalid, 0 Unknown, 76 Unchecked, 0.4s Time] [2022-07-12 10:53:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-07-12 10:53:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 941. [2022-07-12 10:53:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 686 states have (on average 1.1078717201166182) internal successors, (760), 699 states have internal predecessors, (760), 175 states have call successors, (175), 68 states have call predecessors, (175), 79 states have return successors, (240), 173 states have call predecessors, (240), 174 states have call successors, (240) [2022-07-12 10:53:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1175 transitions. [2022-07-12 10:53:23,802 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1175 transitions. Word has length 130 [2022-07-12 10:53:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:23,802 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1175 transitions. [2022-07-12 10:53:23,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-12 10:53:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1175 transitions. [2022-07-12 10:53:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 10:53:23,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:23,804 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:23,827 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 10:53:24,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:24,026 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:24,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:24,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2017540780, now seen corresponding path program 1 times [2022-07-12 10:53:24,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:24,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301556569] [2022-07-12 10:53:24,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:24,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:53:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:53:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:53:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:53:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:53:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:53:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:53:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-12 10:53:24,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301556569] [2022-07-12 10:53:24,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301556569] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:24,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545351805] [2022-07-12 10:53:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:24,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:24,435 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 10:53:24,436 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 10:53:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:24,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-12 10:53:24,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:25,102 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 31 treesize of output 26 [2022-07-12 10:53:25,608 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 10:53:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 10:53:25,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:53:26,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545351805] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:26,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:53:26,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 23 [2022-07-12 10:53:26,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385200289] [2022-07-12 10:53:26,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:53:26,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:53:26,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:53:26,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=488, Unknown=1, NotChecked=0, Total=552 [2022-07-12 10:53:26,777 INFO L87 Difference]: Start difference. First operand 941 states and 1175 transitions. Second operand has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 19 states have internal predecessors, (136), 14 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-12 10:53:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:29,879 INFO L93 Difference]: Finished difference Result 1456 states and 1877 transitions. [2022-07-12 10:53:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 10:53:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 19 states have internal predecessors, (136), 14 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) Word has length 136 [2022-07-12 10:53:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:29,884 INFO L225 Difference]: With dead ends: 1456 [2022-07-12 10:53:29,884 INFO L226 Difference]: Without dead ends: 1324 [2022-07-12 10:53:29,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 238 SyntacticMatches, 22 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=252, Invalid=1727, Unknown=1, NotChecked=0, Total=1980 [2022-07-12 10:53:29,886 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 507 mSDsluCounter, 3092 mSDsCounter, 0 mSdLazyCounter, 5088 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 6348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 5088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 790 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:29,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 3518 Invalid, 6348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 5088 Invalid, 0 Unknown, 790 Unchecked, 2.6s Time] [2022-07-12 10:53:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-07-12 10:53:29,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1155. [2022-07-12 10:53:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 852 states have (on average 1.1103286384976525) internal successors, (946), 866 states have internal predecessors, (946), 203 states have call successors, (203), 84 states have call predecessors, (203), 99 states have return successors, (277), 204 states have call predecessors, (277), 202 states have call successors, (277) [2022-07-12 10:53:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1426 transitions. [2022-07-12 10:53:29,982 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1426 transitions. Word has length 136 [2022-07-12 10:53:29,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:29,982 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1426 transitions. [2022-07-12 10:53:29,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.476190476190476) internal successors, (136), 19 states have internal predecessors, (136), 14 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-12 10:53:29,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1426 transitions. [2022-07-12 10:53:29,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 10:53:29,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:29,985 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:30,007 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 10:53:30,207 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,SelfDestructingSolverStorable23 [2022-07-12 10:53:30,207 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2135982254, now seen corresponding path program 1 times [2022-07-12 10:53:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:30,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995157399] [2022-07-12 10:53:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:53:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:53:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:53:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:53:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:53:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:53:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:53:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:53:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:53:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:53:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-12 10:53:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995157399] [2022-07-12 10:53:31,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995157399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:31,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:53:31,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 10:53:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797031288] [2022-07-12 10:53:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:53:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:31,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:53:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:53:31,180 INFO L87 Difference]: Start difference. First operand 1155 states and 1426 transitions. Second operand has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-12 10:53:32,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:32,873 INFO L93 Difference]: Finished difference Result 1249 states and 1594 transitions. [2022-07-12 10:53:32,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 10:53:32,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 136 [2022-07-12 10:53:32,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:32,877 INFO L225 Difference]: With dead ends: 1249 [2022-07-12 10:53:32,877 INFO L226 Difference]: Without dead ends: 1247 [2022-07-12 10:53:32,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-07-12 10:53:32,878 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 433 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 417 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 417 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:32,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1568 Invalid, 3347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [417 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 10:53:32,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-07-12 10:53:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 1159. [2022-07-12 10:53:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 855 states have (on average 1.1099415204678362) internal successors, (949), 869 states have internal predecessors, (949), 203 states have call successors, (203), 85 states have call predecessors, (203), 100 states have return successors, (277), 204 states have call predecessors, (277), 202 states have call successors, (277) [2022-07-12 10:53:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1429 transitions. [2022-07-12 10:53:32,959 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1429 transitions. Word has length 136 [2022-07-12 10:53:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:32,959 INFO L495 AbstractCegarLoop]: Abstraction has 1159 states and 1429 transitions. [2022-07-12 10:53:32,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-07-12 10:53:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1429 transitions. [2022-07-12 10:53:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 10:53:32,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:32,962 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:53:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:53:32,962 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:32,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1608019483, now seen corresponding path program 1 times [2022-07-12 10:53:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:32,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334410487] [2022-07-12 10:53:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:53:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:53:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:53:33,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:53:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:53:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:53:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:53:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:53:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:53:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:53:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:53:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 10:53:33,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:33,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334410487] [2022-07-12 10:53:33,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334410487] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:33,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585756770] [2022-07-12 10:53:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:33,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:33,459 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 10:53:33,460 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 10:53:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:33,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-12 10:53:33,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:33,905 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 10:53:48,610 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 20 treesize of output 8 [2022-07-12 10:53:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 10:53:48,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:53:48,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585756770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:53:48,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:53:48,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [13] total 34 [2022-07-12 10:53:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977040212] [2022-07-12 10:53:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:53:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:53:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:53:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:53:48,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1032, Unknown=2, NotChecked=0, Total=1122 [2022-07-12 10:53:48,665 INFO L87 Difference]: Start difference. First operand 1159 states and 1429 transitions. Second operand has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 10:53:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:53:49,017 INFO L93 Difference]: Finished difference Result 1351 states and 1665 transitions. [2022-07-12 10:53:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:53:49,018 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 136 [2022-07-12 10:53:49,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:53:49,022 INFO L225 Difference]: With dead ends: 1351 [2022-07-12 10:53:49,022 INFO L226 Difference]: Without dead ends: 1326 [2022-07-12 10:53:49,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 135 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=117, Invalid=1441, Unknown=2, NotChecked=0, Total=1560 [2022-07-12 10:53:49,023 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 60 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:53:49,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 3670 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 247 Unchecked, 0.1s Time] [2022-07-12 10:53:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2022-07-12 10:53:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1180. [2022-07-12 10:53:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 872 states have (on average 1.098623853211009) internal successors, (958), 885 states have internal predecessors, (958), 202 states have call successors, (202), 91 states have call predecessors, (202), 105 states have return successors, (255), 203 states have call predecessors, (255), 201 states have call successors, (255) [2022-07-12 10:53:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1415 transitions. [2022-07-12 10:53:49,099 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1415 transitions. Word has length 136 [2022-07-12 10:53:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:53:49,100 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1415 transitions. [2022-07-12 10:53:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-12 10:53:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1415 transitions. [2022-07-12 10:53:49,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 10:53:49,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:53:49,102 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:53:49,122 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 10:53:49,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-12 10:53:49,322 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:53:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:53:49,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1127341084, now seen corresponding path program 1 times [2022-07-12 10:53:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:53:49,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274630482] [2022-07-12 10:53:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:53:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:53:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:53:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:53:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:53:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:53:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:53:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:53:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:53:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:53:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:53:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:53:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:53:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:53:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:53:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 10:53:50,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:53:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274630482] [2022-07-12 10:53:50,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274630482] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:53:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005376677] [2022-07-12 10:53:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:53:50,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:53:50,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:53:50,256 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 10:53:50,256 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 10:53:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:53:50,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-12 10:53:50,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:53:50,699 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 10:53:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:53:55,201 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 10:53:55,201 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 1 case distinctions, treesize of input 49 treesize of output 45 [2022-07-12 10:54:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:08,228 INFO L356 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-07-12 10:54:08,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 53 [2022-07-12 10:54:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 10:54:09,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:11,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005376677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:11,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:54:11,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 39 [2022-07-12 10:54:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440152656] [2022-07-12 10:54:11,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 10:54:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 10:54:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1967, Unknown=3, NotChecked=0, Total=2162 [2022-07-12 10:54:11,920 INFO L87 Difference]: Start difference. First operand 1180 states and 1415 transitions. Second operand has 39 states, 37 states have (on average 4.324324324324325) internal successors, (160), 35 states have internal predecessors, (160), 18 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-12 10:54:19,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:19,367 INFO L93 Difference]: Finished difference Result 1840 states and 2322 transitions. [2022-07-12 10:54:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-12 10:54:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 4.324324324324325) internal successors, (160), 35 states have internal predecessors, (160), 18 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) Word has length 135 [2022-07-12 10:54:19,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:19,374 INFO L225 Difference]: With dead ends: 1840 [2022-07-12 10:54:19,374 INFO L226 Difference]: Without dead ends: 1705 [2022-07-12 10:54:19,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 232 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3069 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=795, Invalid=8131, Unknown=4, NotChecked=0, Total=8930 [2022-07-12 10:54:19,377 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 994 mSDsluCounter, 3970 mSDsCounter, 0 mSdLazyCounter, 5347 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 4473 SdHoareTripleChecker+Invalid, 8187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 5347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1934 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:19,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 4473 Invalid, 8187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 5347 Invalid, 0 Unknown, 1934 Unchecked, 3.5s Time] [2022-07-12 10:54:19,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-12 10:54:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1388. [2022-07-12 10:54:19,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1015 states have (on average 1.1083743842364533) internal successors, (1125), 1031 states have internal predecessors, (1125), 247 states have call successors, (247), 112 states have call predecessors, (247), 125 states have return successors, (303), 244 states have call predecessors, (303), 245 states have call successors, (303) [2022-07-12 10:54:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1675 transitions. [2022-07-12 10:54:19,487 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1675 transitions. Word has length 135 [2022-07-12 10:54:19,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:19,488 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 1675 transitions. [2022-07-12 10:54:19,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 4.324324324324325) internal successors, (160), 35 states have internal predecessors, (160), 18 states have call successors, (29), 5 states have call predecessors, (29), 7 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-12 10:54:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1675 transitions. [2022-07-12 10:54:19,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 10:54:19,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:19,491 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:19,513 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 10:54:19,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-12 10:54:19,707 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1321112872, now seen corresponding path program 1 times [2022-07-12 10:54:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843614479] [2022-07-12 10:54:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:54:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:54:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:54:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:54:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:54:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:54:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:54:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:54:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:54:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:54:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:54:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 10:54:20,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843614479] [2022-07-12 10:54:20,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843614479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:20,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111616560] [2022-07-12 10:54:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:20,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:20,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:20,854 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 10:54:20,854 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 10:54:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:28,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-12 10:54:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:28,857 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 10:54:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:33,539 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-12 10:54:33,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 49 [2022-07-12 10:54:46,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:46,955 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-07-12 10:54:46,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 57 [2022-07-12 10:54:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 10:54:47,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:48,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111616560] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:48,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:54:48,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 47 [2022-07-12 10:54:48,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918468639] [2022-07-12 10:54:48,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:48,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-12 10:54:48,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:48,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-12 10:54:48,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2939, Unknown=2, NotChecked=0, Total=3192 [2022-07-12 10:54:48,695 INFO L87 Difference]: Start difference. First operand 1388 states and 1675 transitions. Second operand has 47 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 43 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-12 10:55:01,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 10:55:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:08,205 INFO L93 Difference]: Finished difference Result 1968 states and 2455 transitions. [2022-07-12 10:55:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-07-12 10:55:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 43 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) Word has length 135 [2022-07-12 10:55:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:08,211 INFO L225 Difference]: With dead ends: 1968 [2022-07-12 10:55:08,211 INFO L226 Difference]: Without dead ends: 1758 [2022-07-12 10:55:08,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 216 SyntacticMatches, 17 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=1084, Invalid=13192, Unknown=4, NotChecked=0, Total=14280 [2022-07-12 10:55:08,214 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1019 mSDsluCounter, 4766 mSDsCounter, 0 mSdLazyCounter, 9588 mSolverCounterSat, 1002 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 11657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 9588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1066 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 5342 Invalid, 11657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 9588 Invalid, 1 Unknown, 1066 Unchecked, 9.6s Time] [2022-07-12 10:55:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-07-12 10:55:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1540. [2022-07-12 10:55:08,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1132 states have (on average 1.0998233215547704) internal successors, (1245), 1150 states have internal predecessors, (1245), 269 states have call successors, (269), 123 states have call predecessors, (269), 138 states have return successors, (348), 266 states have call predecessors, (348), 267 states have call successors, (348) [2022-07-12 10:55:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1862 transitions. [2022-07-12 10:55:08,387 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1862 transitions. Word has length 135 [2022-07-12 10:55:08,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:08,387 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 1862 transitions. [2022-07-12 10:55:08,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 3.6222222222222222) internal successors, (163), 43 states have internal predecessors, (163), 18 states have call successors, (29), 6 states have call predecessors, (29), 8 states have return successors, (28), 14 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-12 10:55:08,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1862 transitions. [2022-07-12 10:55:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 10:55:08,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:08,390 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:08,407 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 10:55:08,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:08,592 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:08,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1579278310, now seen corresponding path program 1 times [2022-07-12 10:55:08,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:08,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612135818] [2022-07-12 10:55:08,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:08,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:55:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:55:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:55:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:55:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:55:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:55:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:55:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:55:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:55:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:55:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:55:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-12 10:55:08,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:08,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612135818] [2022-07-12 10:55:08,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612135818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:08,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:55:08,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:55:08,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964951423] [2022-07-12 10:55:08,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:55:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:55:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:55:08,758 INFO L87 Difference]: Start difference. First operand 1540 states and 1862 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:55:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:09,321 INFO L93 Difference]: Finished difference Result 1859 states and 2298 transitions. [2022-07-12 10:55:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:55:09,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2022-07-12 10:55:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:09,328 INFO L225 Difference]: With dead ends: 1859 [2022-07-12 10:55:09,328 INFO L226 Difference]: Without dead ends: 1557 [2022-07-12 10:55:09,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 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 10:55:09,329 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 126 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:09,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 704 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:55:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2022-07-12 10:55:09,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1524. [2022-07-12 10:55:09,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1118 states have (on average 1.0974955277280858) internal successors, (1227), 1134 states have internal predecessors, (1227), 269 states have call successors, (269), 123 states have call predecessors, (269), 136 states have return successors, (335), 266 states have call predecessors, (335), 267 states have call successors, (335) [2022-07-12 10:55:09,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1831 transitions. [2022-07-12 10:55:09,467 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1831 transitions. Word has length 135 [2022-07-12 10:55:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:09,467 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1831 transitions. [2022-07-12 10:55:09,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 10:55:09,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1831 transitions. [2022-07-12 10:55:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 10:55:09,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:09,470 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:09,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:55:09,470 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash -591306961, now seen corresponding path program 1 times [2022-07-12 10:55:09,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:09,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856693129] [2022-07-12 10:55:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:09,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:09,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:55:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:09,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 10:55:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:55:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:55:10,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:55:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:55:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:55:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 10:55:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:55:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:55:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:55:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 10:55:10,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:10,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856693129] [2022-07-12 10:55:10,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856693129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:10,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:55:10,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-12 10:55:10,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213722297] [2022-07-12 10:55:10,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:10,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:55:10,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:10,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:55:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:55:10,189 INFO L87 Difference]: Start difference. First operand 1524 states and 1831 transitions. Second operand has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:55:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:12,317 INFO L93 Difference]: Finished difference Result 1694 states and 2115 transitions. [2022-07-12 10:55:12,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:55:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2022-07-12 10:55:12,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:12,323 INFO L225 Difference]: With dead ends: 1694 [2022-07-12 10:55:12,323 INFO L226 Difference]: Without dead ends: 1692 [2022-07-12 10:55:12,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:55:12,324 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 417 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:12,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1763 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 3595 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 10:55:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-07-12 10:55:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1533. [2022-07-12 10:55:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1124 states have (on average 1.0969750889679715) internal successors, (1233), 1140 states have internal predecessors, (1233), 270 states have call successors, (270), 125 states have call predecessors, (270), 138 states have return successors, (336), 267 states have call predecessors, (336), 268 states have call successors, (336) [2022-07-12 10:55:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1839 transitions. [2022-07-12 10:55:12,469 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1839 transitions. Word has length 137 [2022-07-12 10:55:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 1533 states and 1839 transitions. [2022-07-12 10:55:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.789473684210526) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-12 10:55:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1839 transitions. [2022-07-12 10:55:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:55:12,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:12,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 10:55:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:55:12,474 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -14104444, now seen corresponding path program 1 times [2022-07-12 10:55:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707247456] [2022-07-12 10:55:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:55:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:55:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:55:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:55:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:55:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:55:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:55:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:55:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:55:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:55:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:55:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:55:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-12 10:55:12,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707247456] [2022-07-12 10:55:12,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707247456] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413277731] [2022-07-12 10:55:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:12,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:12,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:12,848 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 10:55:12,849 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 10:55:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:13,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-12 10:55:13,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:13,262 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 10:55:13,381 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:55:13,381 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 10:55:13,406 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 10:55:13,894 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-12 10:55:13,894 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 10:55:28,336 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 10:55:52,323 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_38| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_38|) 8))) (and (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~to#1.base_BEFORE_CALL_38| .cse0))))) is different from true