./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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_init_copy_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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 19:32:58,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 19:32:58,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 19:32:58,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 19:32:58,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 19:32:58,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 19:32:58,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 19:32:58,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 19:32:58,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 19:32:58,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 19:32:58,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 19:32:58,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 19:32:58,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 19:32:58,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 19:32:58,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 19:32:58,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 19:32:58,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 19:32:58,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 19:32:58,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 19:32:58,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 19:32:58,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 19:32:58,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 19:32:58,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 19:32:58,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 19:32:58,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 19:32:58,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 19:32:58,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 19:32:58,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 19:32:58,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 19:32:58,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 19:32:58,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 19:32:58,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 19:32:58,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 19:32:58,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 19:32:58,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 19:32:58,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 19:32:58,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 19:32:58,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 19:32:58,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 19:32:58,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 19:32:58,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 19:32:58,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 19:32:58,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 19:32:58,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 19:32:58,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 19:32:58,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 19:32:58,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 19:32:58,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 19:32:58,390 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 19:32:58,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 19:32:58,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 19:32:58,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 19:32:58,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 19:32:58,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 19:32:58,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 19:32:58,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 19:32:58,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:32:58,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 19:32:58,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 19:32:58,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 19:32:58,394 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-11-22 19:32:58,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 19:32:58,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 19:32:58,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 19:32:58,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 19:32:58,571 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 19:32:58,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-22 19:32:58,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88ba4408/6dae22ec561e45f09777e51c3ef2f290/FLAG0765117f5 [2021-11-22 19:32:59,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 19:32:59,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-11-22 19:32:59,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88ba4408/6dae22ec561e45f09777e51c3ef2f290/FLAG0765117f5 [2021-11-22 19:32:59,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d88ba4408/6dae22ec561e45f09777e51c3ef2f290 [2021-11-22 19:32:59,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 19:32:59,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 19:32:59,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 19:32:59,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 19:32:59,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 19:32:59,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:32:59" (1/1) ... [2021-11-22 19:32:59,660 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 22.11 07:32:59, skipping insertion in model container [2021-11-22 19:32:59,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 07:32:59" (1/1) ... [2021-11-22 19:32:59,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 19:32:59,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 19:32:59,923 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_init_copy_harness.i[4496,4509] [2021-11-22 19:32:59,928 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_init_copy_harness.i[4556,4569] [2021-11-22 19:33:00,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,483 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,485 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,486 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:33:00,696 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:33:00,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:33:00,698 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:33:00,700 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:33:00,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:33:00,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:33:00,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:33:00,704 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:33:00,706 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:33:00,793 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:33:00,870 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:00,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:33:00,955 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 19:33:01,006 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_init_copy_harness.i[4496,4509] [2021-11-22 19:33:01,031 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_init_copy_harness.i[4556,4569] [2021-11-22 19:33:01,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,056 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,063 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,065 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,084 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 19:33:01,085 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 19:33:01,085 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 19:33:01,086 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 19:33:01,086 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 19:33:01,086 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 19:33:01,087 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 19:33:01,087 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 19:33:01,087 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 19:33:01,088 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 19:33:01,104 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 19:33:01,136 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,137 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 19:33:01,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 19:33:01,340 INFO L208 MainTranslator]: Completed translation [2021-11-22 19:33:01,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01 WrapperNode [2021-11-22 19:33:01,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 19:33:01,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 19:33:01,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 19:33:01,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 19:33:01,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,469 INFO L137 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 963, calls inlined = 64, statements flattened = 1435 [2021-11-22 19:33:01,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 19:33:01,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 19:33:01,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 19:33:01,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 19:33:01,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 19:33:01,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 19:33:01,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 19:33:01,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 19:33:01,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (1/1) ... [2021-11-22 19:33:01,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 19:33:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:01,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 19:33:01,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 19:33:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 19:33:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 19:33:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 19:33:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 19:33:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 19:33:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 19:33:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 19:33:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 19:33:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 19:33:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 19:33:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 19:33:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 19:33:01,859 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 19:33:01,860 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 19:33:02,742 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 19:33:02,747 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 19:33:02,748 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-22 19:33:02,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:33:02 BoogieIcfgContainer [2021-11-22 19:33:02,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 19:33:02,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 19:33:02,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 19:33:02,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 19:33:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 07:32:59" (1/3) ... [2021-11-22 19:33:02,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4794062f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:33:02, skipping insertion in model container [2021-11-22 19:33:02,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 07:33:01" (2/3) ... [2021-11-22 19:33:02,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4794062f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 07:33:02, skipping insertion in model container [2021-11-22 19:33:02,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 07:33:02" (3/3) ... [2021-11-22 19:33:02,755 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2021-11-22 19:33:02,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 19:33:02,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-22 19:33:02,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 19:33:02,795 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 19:33:02,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-22 19:33:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 216 states have (on average 1.462962962962963) internal successors, (316), 227 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-22 19:33:02,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:02,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:02,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1540787369, now seen corresponding path program 1 times [2021-11-22 19:33:02,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:02,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275258795] [2021-11-22 19:33:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:02,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:03,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:03,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275258795] [2021-11-22 19:33:03,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275258795] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:03,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:03,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 19:33:03,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533197043] [2021-11-22 19:33:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:03,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 19:33:03,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:03,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 19:33:03,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:33:03,151 INFO L87 Difference]: Start difference. First operand has 228 states, 216 states have (on average 1.462962962962963) internal successors, (316), 227 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:03,173 INFO L93 Difference]: Finished difference Result 452 states and 627 transitions. [2021-11-22 19:33:03,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 19:33:03,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-22 19:33:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:03,182 INFO L225 Difference]: With dead ends: 452 [2021-11-22 19:33:03,182 INFO L226 Difference]: Without dead ends: 221 [2021-11-22 19:33:03,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 19:33:03,187 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:03,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-22 19:33:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-11-22 19:33:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 210 states have (on average 1.3047619047619048) internal successors, (274), 220 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 274 transitions. [2021-11-22 19:33:03,218 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 274 transitions. Word has length 37 [2021-11-22 19:33:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:03,219 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 274 transitions. [2021-11-22 19:33:03,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 274 transitions. [2021-11-22 19:33:03,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 19:33:03,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:03,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:03,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 19:33:03,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:03,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:03,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1456780574, now seen corresponding path program 1 times [2021-11-22 19:33:03,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:03,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398310817] [2021-11-22 19:33:03,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:03,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:03,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398310817] [2021-11-22 19:33:03,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398310817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:03,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:33:03,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783904133] [2021-11-22 19:33:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:03,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:33:03,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:33:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:33:03,378 INFO L87 Difference]: Start difference. First operand 221 states and 274 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:03,437 INFO L93 Difference]: Finished difference Result 416 states and 514 transitions. [2021-11-22 19:33:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 19:33:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 19:33:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:03,439 INFO L225 Difference]: With dead ends: 416 [2021-11-22 19:33:03,439 INFO L226 Difference]: Without dead ends: 221 [2021-11-22 19:33:03,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:03,440 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 365 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:03,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 395 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:03,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-22 19:33:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2021-11-22 19:33:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 210 states have (on average 1.2952380952380953) internal successors, (272), 220 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 272 transitions. [2021-11-22 19:33:03,449 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 272 transitions. Word has length 41 [2021-11-22 19:33:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:03,450 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 272 transitions. [2021-11-22 19:33:03,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 272 transitions. [2021-11-22 19:33:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-22 19:33:03,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:03,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:03,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 19:33:03,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash 108454741, now seen corresponding path program 1 times [2021-11-22 19:33:03,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490663954] [2021-11-22 19:33:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:03,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:03,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490663954] [2021-11-22 19:33:03,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490663954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:03,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:03,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:33:03,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649430584] [2021-11-22 19:33:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:03,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:33:03,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:33:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:33:03,570 INFO L87 Difference]: Start difference. First operand 221 states and 272 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:03,661 INFO L93 Difference]: Finished difference Result 477 states and 596 transitions. [2021-11-22 19:33:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:33:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-22 19:33:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:03,663 INFO L225 Difference]: With dead ends: 477 [2021-11-22 19:33:03,663 INFO L226 Difference]: Without dead ends: 281 [2021-11-22 19:33:03,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:03,664 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 129 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:03,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 745 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:03,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-22 19:33:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 233. [2021-11-22 19:33:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 222 states have (on average 1.2792792792792793) internal successors, (284), 232 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 284 transitions. [2021-11-22 19:33:03,672 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 284 transitions. Word has length 47 [2021-11-22 19:33:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:03,673 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 284 transitions. [2021-11-22 19:33:03,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 284 transitions. [2021-11-22 19:33:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-22 19:33:03,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:03,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:03,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 19:33:03,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash -166304873, now seen corresponding path program 1 times [2021-11-22 19:33:03,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:03,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002526118] [2021-11-22 19:33:03,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:03,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:03,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002526118] [2021-11-22 19:33:03,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002526118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:03,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:03,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:33:03,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142490123] [2021-11-22 19:33:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:03,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:33:03,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:03,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:33:03,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:03,849 INFO L87 Difference]: Start difference. First operand 233 states and 284 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:03,921 INFO L93 Difference]: Finished difference Result 405 states and 492 transitions. [2021-11-22 19:33:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:33:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-22 19:33:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:03,923 INFO L225 Difference]: With dead ends: 405 [2021-11-22 19:33:03,923 INFO L226 Difference]: Without dead ends: 233 [2021-11-22 19:33:03,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:33:03,924 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 568 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:03,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 428 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-22 19:33:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-22 19:33:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 222 states have (on average 1.2747747747747749) internal successors, (283), 232 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 283 transitions. [2021-11-22 19:33:03,930 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 283 transitions. Word has length 47 [2021-11-22 19:33:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:03,930 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 283 transitions. [2021-11-22 19:33:03,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 283 transitions. [2021-11-22 19:33:03,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 19:33:03,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:03,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:03,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 19:33:03,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:03,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:03,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1511343190, now seen corresponding path program 1 times [2021-11-22 19:33:03,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:03,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141028790] [2021-11-22 19:33:03,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:03,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:04,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:04,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141028790] [2021-11-22 19:33:04,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141028790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:04,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:04,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:33:04,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204579293] [2021-11-22 19:33:04,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:04,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:33:04,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:04,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:33:04,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:33:04,039 INFO L87 Difference]: Start difference. First operand 233 states and 283 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:04,123 INFO L93 Difference]: Finished difference Result 567 states and 706 transitions. [2021-11-22 19:33:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:33:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 19:33:04,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:04,125 INFO L225 Difference]: With dead ends: 567 [2021-11-22 19:33:04,125 INFO L226 Difference]: Without dead ends: 353 [2021-11-22 19:33:04,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:04,127 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 182 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:04,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 879 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-22 19:33:04,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 245. [2021-11-22 19:33:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 234 states have (on average 1.2606837606837606) internal successors, (295), 244 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 295 transitions. [2021-11-22 19:33:04,132 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 295 transitions. Word has length 53 [2021-11-22 19:33:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:04,133 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 295 transitions. [2021-11-22 19:33:04,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 295 transitions. [2021-11-22 19:33:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 19:33:04,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:04,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:04,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 19:33:04,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:04,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 482801516, now seen corresponding path program 1 times [2021-11-22 19:33:04,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:04,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599885918] [2021-11-22 19:33:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:04,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:04,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:04,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599885918] [2021-11-22 19:33:04,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599885918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:04,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:04,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:33:04,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44074622] [2021-11-22 19:33:04,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:04,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:33:04,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:04,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:33:04,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:04,275 INFO L87 Difference]: Start difference. First operand 245 states and 295 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:04,331 INFO L93 Difference]: Finished difference Result 461 states and 549 transitions. [2021-11-22 19:33:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:33:04,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-22 19:33:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:04,334 INFO L225 Difference]: With dead ends: 461 [2021-11-22 19:33:04,335 INFO L226 Difference]: Without dead ends: 361 [2021-11-22 19:33:04,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:33:04,337 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 145 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:04,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1477 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-11-22 19:33:04,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 238. [2021-11-22 19:33:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 237 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2021-11-22 19:33:04,343 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 53 [2021-11-22 19:33:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:04,345 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2021-11-22 19:33:04,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,345 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2021-11-22 19:33:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 19:33:04,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:04,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:04,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 19:33:04,346 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:04,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -883683736, now seen corresponding path program 1 times [2021-11-22 19:33:04,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479568832] [2021-11-22 19:33:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:04,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:04,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:04,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479568832] [2021-11-22 19:33:04,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479568832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:04,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:04,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 19:33:04,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113589473] [2021-11-22 19:33:04,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:04,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 19:33:04,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:04,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 19:33:04,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:33:04,506 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:04,513 INFO L93 Difference]: Finished difference Result 351 states and 420 transitions. [2021-11-22 19:33:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 19:33:04,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 19:33:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:04,515 INFO L225 Difference]: With dead ends: 351 [2021-11-22 19:33:04,515 INFO L226 Difference]: Without dead ends: 239 [2021-11-22 19:33:04,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 19:33:04,516 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:04,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 518 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:04,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-22 19:33:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-22 19:33:04,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2543859649122806) internal successors, (286), 238 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2021-11-22 19:33:04,520 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 57 [2021-11-22 19:33:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:04,521 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2021-11-22 19:33:04,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2021-11-22 19:33:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 19:33:04,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:04,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:04,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 19:33:04,522 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1782760608, now seen corresponding path program 1 times [2021-11-22 19:33:04,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280109338] [2021-11-22 19:33:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:04,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:04,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:04,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280109338] [2021-11-22 19:33:04,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280109338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:04,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397062635] [2021-11-22 19:33:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:04,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:04,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 19:33:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:05,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 19:33:05,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:05,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:05,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397062635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:05,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:05,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-22 19:33:05,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823560908] [2021-11-22 19:33:05,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:05,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:33:05,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:33:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:33:05,261 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:05,362 INFO L93 Difference]: Finished difference Result 337 states and 398 transitions. [2021-11-22 19:33:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 19:33:05,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 19:33:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:05,364 INFO L225 Difference]: With dead ends: 337 [2021-11-22 19:33:05,364 INFO L226 Difference]: Without dead ends: 239 [2021-11-22 19:33:05,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:33:05,365 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 749 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:05,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 449 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-22 19:33:05,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-22 19:33:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2412280701754386) internal successors, (283), 238 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 283 transitions. [2021-11-22 19:33:05,370 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 283 transitions. Word has length 58 [2021-11-22 19:33:05,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:05,370 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 283 transitions. [2021-11-22 19:33:05,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,370 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 283 transitions. [2021-11-22 19:33:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 19:33:05,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:05,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:05,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:05,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:05,588 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1453469653, now seen corresponding path program 1 times [2021-11-22 19:33:05,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:05,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592209803] [2021-11-22 19:33:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:05,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:05,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:05,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592209803] [2021-11-22 19:33:05,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592209803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:05,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:05,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 19:33:05,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984603008] [2021-11-22 19:33:05,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:05,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:33:05,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:33:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:33:05,731 INFO L87 Difference]: Start difference. First operand 239 states and 283 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:05,899 INFO L93 Difference]: Finished difference Result 393 states and 450 transitions. [2021-11-22 19:33:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:33:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 19:33:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:05,901 INFO L225 Difference]: With dead ends: 393 [2021-11-22 19:33:05,901 INFO L226 Difference]: Without dead ends: 385 [2021-11-22 19:33:05,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:33:05,902 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 266 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:05,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 1010 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-22 19:33:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 255. [2021-11-22 19:33:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 244 states have (on average 1.2254098360655739) internal successors, (299), 254 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 299 transitions. [2021-11-22 19:33:05,909 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 299 transitions. Word has length 64 [2021-11-22 19:33:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:05,909 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 299 transitions. [2021-11-22 19:33:05,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 299 transitions. [2021-11-22 19:33:05,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 19:33:05,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:05,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:05,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 19:33:05,910 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:05,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash 302637903, now seen corresponding path program 1 times [2021-11-22 19:33:05,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:05,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141049580] [2021-11-22 19:33:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:05,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:06,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:06,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141049580] [2021-11-22 19:33:06,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141049580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:06,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41313455] [2021-11-22 19:33:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:06,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:06,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:06,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:06,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 19:33:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:06,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-22 19:33:06,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:06,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:33:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:06,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41313455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:06,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:06,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2021-11-22 19:33:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489962211] [2021-11-22 19:33:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:06,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:33:06,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:33:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:06,724 INFO L87 Difference]: Start difference. First operand 255 states and 299 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:07,251 INFO L93 Difference]: Finished difference Result 552 states and 655 transitions. [2021-11-22 19:33:07,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-22 19:33:07,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-22 19:33:07,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:07,253 INFO L225 Difference]: With dead ends: 552 [2021-11-22 19:33:07,253 INFO L226 Difference]: Without dead ends: 326 [2021-11-22 19:33:07,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:33:07,254 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 584 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:07,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1289 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:33:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-22 19:33:07,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 263. [2021-11-22 19:33:07,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 252 states have (on average 1.2222222222222223) internal successors, (308), 262 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 308 transitions. [2021-11-22 19:33:07,261 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 308 transitions. Word has length 68 [2021-11-22 19:33:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:07,261 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 308 transitions. [2021-11-22 19:33:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 308 transitions. [2021-11-22 19:33:07,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-22 19:33:07,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:07,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:07,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:07,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 19:33:07,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash -362187001, now seen corresponding path program 1 times [2021-11-22 19:33:07,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:07,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719192573] [2021-11-22 19:33:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:07,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:07,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719192573] [2021-11-22 19:33:07,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719192573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:07,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255742538] [2021-11-22 19:33:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:07,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:07,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:07,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:07,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 19:33:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:08,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 19:33:08,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:08,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:08,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255742538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:08,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:08,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 19:33:08,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428753128] [2021-11-22 19:33:08,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:08,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:33:08,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:33:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:33:08,173 INFO L87 Difference]: Start difference. First operand 263 states and 308 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:08,343 INFO L93 Difference]: Finished difference Result 616 states and 706 transitions. [2021-11-22 19:33:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:33:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-22 19:33:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:08,345 INFO L225 Difference]: With dead ends: 616 [2021-11-22 19:33:08,345 INFO L226 Difference]: Without dead ends: 379 [2021-11-22 19:33:08,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:08,346 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 163 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:08,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 1747 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-22 19:33:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 263. [2021-11-22 19:33:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 252 states have (on average 1.2182539682539681) internal successors, (307), 262 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 307 transitions. [2021-11-22 19:33:08,353 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 307 transitions. Word has length 75 [2021-11-22 19:33:08,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:08,354 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 307 transitions. [2021-11-22 19:33:08,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 307 transitions. [2021-11-22 19:33:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:33:08,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:08,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:08,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:08,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:08,571 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash 773592642, now seen corresponding path program 1 times [2021-11-22 19:33:08,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:08,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550256817] [2021-11-22 19:33:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:08,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:08,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:08,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550256817] [2021-11-22 19:33:08,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550256817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:08,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512210796] [2021-11-22 19:33:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:08,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:08,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:08,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:08,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 19:33:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:09,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 19:33:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:09,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:09,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512210796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:09,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:09,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-22 19:33:09,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691223384] [2021-11-22 19:33:09,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:09,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 19:33:09,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:09,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 19:33:09,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:33:09,322 INFO L87 Difference]: Start difference. First operand 263 states and 307 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:09,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:09,806 INFO L93 Difference]: Finished difference Result 695 states and 815 transitions. [2021-11-22 19:33:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:33:09,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:33:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:09,808 INFO L225 Difference]: With dead ends: 695 [2021-11-22 19:33:09,808 INFO L226 Difference]: Without dead ends: 457 [2021-11-22 19:33:09,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-22 19:33:09,808 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 302 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:09,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1278 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:33:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-11-22 19:33:09,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 299. [2021-11-22 19:33:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.2291666666666667) internal successors, (354), 298 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 354 transitions. [2021-11-22 19:33:09,816 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 354 transitions. Word has length 77 [2021-11-22 19:33:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:09,817 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 354 transitions. [2021-11-22 19:33:09,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:09,817 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 354 transitions. [2021-11-22 19:33:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:33:09,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:09,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:09,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:10,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:10,032 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash 814267392, now seen corresponding path program 1 times [2021-11-22 19:33:10,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:10,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160029339] [2021-11-22 19:33:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:10,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:10,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:10,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160029339] [2021-11-22 19:33:10,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160029339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:10,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121786862] [2021-11-22 19:33:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:10,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:10,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:10,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:10,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 19:33:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:10,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2676 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 19:33:10,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:10,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:10,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:10,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121786862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:10,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:10,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-22 19:33:10,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669607741] [2021-11-22 19:33:10,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:10,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:33:10,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:33:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:33:10,700 INFO L87 Difference]: Start difference. First operand 299 states and 354 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:11,054 INFO L93 Difference]: Finished difference Result 751 states and 887 transitions. [2021-11-22 19:33:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:33:11,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:33:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:11,056 INFO L225 Difference]: With dead ends: 751 [2021-11-22 19:33:11,056 INFO L226 Difference]: Without dead ends: 477 [2021-11-22 19:33:11,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:33:11,057 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 375 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:11,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 840 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:33:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-22 19:33:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 309. [2021-11-22 19:33:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 298 states have (on average 1.2013422818791946) internal successors, (358), 308 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 358 transitions. [2021-11-22 19:33:11,068 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 358 transitions. Word has length 77 [2021-11-22 19:33:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:11,069 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 358 transitions. [2021-11-22 19:33:11,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,069 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 358 transitions. [2021-11-22 19:33:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:33:11,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:11,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:11,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:11,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-22 19:33:11,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1374967170, now seen corresponding path program 1 times [2021-11-22 19:33:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136261524] [2021-11-22 19:33:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:11,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:11,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:11,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136261524] [2021-11-22 19:33:11,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136261524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:11,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:11,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 19:33:11,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828244693] [2021-11-22 19:33:11,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:11,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 19:33:11,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 19:33:11,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 19:33:11,402 INFO L87 Difference]: Start difference. First operand 309 states and 358 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:11,482 INFO L93 Difference]: Finished difference Result 622 states and 721 transitions. [2021-11-22 19:33:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:33:11,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:33:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:11,484 INFO L225 Difference]: With dead ends: 622 [2021-11-22 19:33:11,484 INFO L226 Difference]: Without dead ends: 333 [2021-11-22 19:33:11,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:11,485 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 40 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:11,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 693 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:11,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-22 19:33:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 286. [2021-11-22 19:33:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 275 states have (on average 1.1890909090909092) internal successors, (327), 285 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 327 transitions. [2021-11-22 19:33:11,493 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 327 transitions. Word has length 77 [2021-11-22 19:33:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:11,493 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 327 transitions. [2021-11-22 19:33:11,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 327 transitions. [2021-11-22 19:33:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:33:11,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:11,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:11,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 19:33:11,494 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash 719199744, now seen corresponding path program 1 times [2021-11-22 19:33:11,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:11,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310761431] [2021-11-22 19:33:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:11,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:11,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310761431] [2021-11-22 19:33:11,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310761431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6248525] [2021-11-22 19:33:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:11,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:11,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:11,641 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:11,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 19:33:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:12,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-22 19:33:12,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:12,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-22 19:33:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:12,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:12,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6248525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:12,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:12,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 19:33:12,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786597579] [2021-11-22 19:33:12,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:12,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:33:12,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:33:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:33:12,299 INFO L87 Difference]: Start difference. First operand 286 states and 327 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:12,842 INFO L93 Difference]: Finished difference Result 819 states and 932 transitions. [2021-11-22 19:33:12,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 19:33:12,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:33:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:12,844 INFO L225 Difference]: With dead ends: 819 [2021-11-22 19:33:12,844 INFO L226 Difference]: Without dead ends: 578 [2021-11-22 19:33:12,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:33:12,845 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 621 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:12,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1596 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:33:12,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-22 19:33:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 298. [2021-11-22 19:33:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.181184668989547) internal successors, (339), 297 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 339 transitions. [2021-11-22 19:33:12,856 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 339 transitions. Word has length 77 [2021-11-22 19:33:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:12,856 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 339 transitions. [2021-11-22 19:33:12,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 339 transitions. [2021-11-22 19:33:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 19:33:12,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:12,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:12,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-22 19:33:13,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 19:33:13,066 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash 759874494, now seen corresponding path program 1 times [2021-11-22 19:33:13,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:13,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651994304] [2021-11-22 19:33:13,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:13,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:13,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:13,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651994304] [2021-11-22 19:33:13,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651994304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:13,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20863269] [2021-11-22 19:33:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:13,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:13,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:13,201 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:13,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 19:33:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:13,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-22 19:33:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:13,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:33:13,739 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:33:13,740 INFO L388 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 [2021-11-22 19:33:13,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-22 19:33:13,969 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:13,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-22 19:33:14,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:33:14,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:33:14,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-22 19:33:14,061 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:14,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-22 19:33:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:14,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:14,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20863269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:14,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:14,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2021-11-22 19:33:14,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028919995] [2021-11-22 19:33:14,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:14,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:33:14,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:33:14,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:33:14,246 INFO L87 Difference]: Start difference. First operand 298 states and 339 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:14,814 INFO L93 Difference]: Finished difference Result 533 states and 604 transitions. [2021-11-22 19:33:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:33:14,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-22 19:33:14,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:14,815 INFO L225 Difference]: With dead ends: 533 [2021-11-22 19:33:14,815 INFO L226 Difference]: Without dead ends: 322 [2021-11-22 19:33:14,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:33:14,816 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 592 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:14,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1090 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 19:33:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-22 19:33:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 286. [2021-11-22 19:33:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 275 states have (on average 1.1781818181818182) internal successors, (324), 285 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 324 transitions. [2021-11-22 19:33:14,824 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 324 transitions. Word has length 77 [2021-11-22 19:33:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:14,825 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 324 transitions. [2021-11-22 19:33:14,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 324 transitions. [2021-11-22 19:33:14,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 19:33:14,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:14,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:14,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:15,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:15,040 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash 977363020, now seen corresponding path program 1 times [2021-11-22 19:33:15,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068295307] [2021-11-22 19:33:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:15,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:15,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:15,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068295307] [2021-11-22 19:33:15,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068295307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:15,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575501523] [2021-11-22 19:33:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:15,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:15,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:15,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:15,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 19:33:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:15,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 19:33:15,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:15,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:15,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575501523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:15,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:15,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-22 19:33:15,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566723977] [2021-11-22 19:33:15,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:15,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:33:15,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:33:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:33:15,662 INFO L87 Difference]: Start difference. First operand 286 states and 324 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:15,793 INFO L93 Difference]: Finished difference Result 570 states and 639 transitions. [2021-11-22 19:33:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 19:33:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 19:33:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:15,794 INFO L225 Difference]: With dead ends: 570 [2021-11-22 19:33:15,794 INFO L226 Difference]: Without dead ends: 351 [2021-11-22 19:33:15,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:15,795 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 116 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:15,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1550 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-22 19:33:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 279. [2021-11-22 19:33:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 268 states have (on average 1.1679104477611941) internal successors, (313), 278 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 313 transitions. [2021-11-22 19:33:15,808 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 313 transitions. Word has length 78 [2021-11-22 19:33:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:15,808 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 313 transitions. [2021-11-22 19:33:15,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 313 transitions. [2021-11-22 19:33:15,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 19:33:15,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:15,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:15,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:16,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 19:33:16,030 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:16,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1171001233, now seen corresponding path program 1 times [2021-11-22 19:33:16,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:16,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049984750] [2021-11-22 19:33:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:16,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:16,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049984750] [2021-11-22 19:33:16,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049984750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:16,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245302934] [2021-11-22 19:33:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:16,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:16,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:16,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:16,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 19:33:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:16,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 19:33:16,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:16,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:33:16,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-22 19:33:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:16,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:16,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245302934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:16,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:16,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-22 19:33:16,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514724670] [2021-11-22 19:33:16,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:16,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:33:16,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:16,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:33:16,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-22 19:33:16,845 INFO L87 Difference]: Start difference. First operand 279 states and 313 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:17,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:17,039 INFO L93 Difference]: Finished difference Result 446 states and 502 transitions. [2021-11-22 19:33:17,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 19:33:17,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 19:33:17,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:17,040 INFO L225 Difference]: With dead ends: 446 [2021-11-22 19:33:17,040 INFO L226 Difference]: Without dead ends: 304 [2021-11-22 19:33:17,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-22 19:33:17,041 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 787 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:17,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 866 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 19:33:17,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-22 19:33:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-11-22 19:33:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.1569965870307166) internal successors, (339), 303 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 339 transitions. [2021-11-22 19:33:17,054 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 339 transitions. Word has length 80 [2021-11-22 19:33:17,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:17,055 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 339 transitions. [2021-11-22 19:33:17,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 339 transitions. [2021-11-22 19:33:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 19:33:17,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:17,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:17,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:17,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-22 19:33:17,256 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:17,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:17,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1791074865, now seen corresponding path program 1 times [2021-11-22 19:33:17,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:17,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093947256] [2021-11-22 19:33:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:17,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:17,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:17,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093947256] [2021-11-22 19:33:17,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093947256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:17,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655100622] [2021-11-22 19:33:17,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:17,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:17,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:17,389 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:17,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 19:33:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:17,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-22 19:33:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:17,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:33:17,873 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:17,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-22 19:33:18,074 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:18,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-22 19:33:18,108 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:33:18,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:33:18,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-11-22 19:33:18,160 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:18,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-22 19:33:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:18,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:18,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655100622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:18,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:18,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2021-11-22 19:33:18,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300701709] [2021-11-22 19:33:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:33:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:33:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:33:18,300 INFO L87 Difference]: Start difference. First operand 304 states and 339 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:18,940 INFO L93 Difference]: Finished difference Result 574 states and 640 transitions. [2021-11-22 19:33:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:33:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-22 19:33:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:18,942 INFO L225 Difference]: With dead ends: 574 [2021-11-22 19:33:18,942 INFO L226 Difference]: Without dead ends: 352 [2021-11-22 19:33:18,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-11-22 19:33:18,942 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 443 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:18,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1790 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:33:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-22 19:33:18,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 320. [2021-11-22 19:33:18,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 309 states have (on average 1.145631067961165) internal successors, (354), 319 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:18,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 354 transitions. [2021-11-22 19:33:18,951 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 354 transitions. Word has length 83 [2021-11-22 19:33:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:18,951 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 354 transitions. [2021-11-22 19:33:18,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 354 transitions. [2021-11-22 19:33:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 19:33:18,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:18,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:18,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:19,167 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1089474991, now seen corresponding path program 1 times [2021-11-22 19:33:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:19,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156472522] [2021-11-22 19:33:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:19,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:19,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156472522] [2021-11-22 19:33:19,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156472522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553478844] [2021-11-22 19:33:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:19,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:19,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:19,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:19,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 19:33:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:19,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-22 19:33:19,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:19,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:33:19,881 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-22 19:33:19,881 INFO L388 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 [2021-11-22 19:33:19,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-22 19:33:20,108 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:20,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-11-22 19:33:20,154 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:33:20,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:33:20,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2021-11-22 19:33:20,215 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:20,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-11-22 19:33:20,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-22 19:33:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:20,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553478844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:20,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:20,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2021-11-22 19:33:20,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896984942] [2021-11-22 19:33:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:20,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 19:33:20,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 19:33:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:20,391 INFO L87 Difference]: Start difference. First operand 320 states and 354 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:20,640 INFO L93 Difference]: Finished difference Result 424 states and 471 transitions. [2021-11-22 19:33:20,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:33:20,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-22 19:33:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:20,642 INFO L225 Difference]: With dead ends: 424 [2021-11-22 19:33:20,642 INFO L226 Difference]: Without dead ends: 282 [2021-11-22 19:33:20,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-22 19:33:20,643 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 288 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:20,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 977 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:33:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-22 19:33:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2021-11-22 19:33:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 247 states have (on average 1.145748987854251) internal successors, (283), 256 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 283 transitions. [2021-11-22 19:33:20,650 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 283 transitions. Word has length 83 [2021-11-22 19:33:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:20,650 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 283 transitions. [2021-11-22 19:33:20,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 283 transitions. [2021-11-22 19:33:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 19:33:20,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:20,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:20,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-22 19:33:20,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:20,859 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2062268324, now seen corresponding path program 1 times [2021-11-22 19:33:20,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892947869] [2021-11-22 19:33:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:20,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:21,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:21,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892947869] [2021-11-22 19:33:21,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892947869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:21,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:21,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:33:21,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598485716] [2021-11-22 19:33:21,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:21,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:33:21,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:33:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:21,004 INFO L87 Difference]: Start difference. First operand 257 states and 283 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:21,043 INFO L93 Difference]: Finished difference Result 712 states and 799 transitions. [2021-11-22 19:33:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 19:33:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-11-22 19:33:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:21,045 INFO L225 Difference]: With dead ends: 712 [2021-11-22 19:33:21,045 INFO L226 Difference]: Without dead ends: 562 [2021-11-22 19:33:21,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:33:21,046 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 402 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:21,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 972 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-22 19:33:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 260. [2021-11-22 19:33:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 250 states have (on average 1.144) internal successors, (286), 259 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 286 transitions. [2021-11-22 19:33:21,055 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 286 transitions. Word has length 98 [2021-11-22 19:33:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:21,055 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 286 transitions. [2021-11-22 19:33:21,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 286 transitions. [2021-11-22 19:33:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-22 19:33:21,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:21,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:21,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 19:33:21,056 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:21,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash -820056480, now seen corresponding path program 1 times [2021-11-22 19:33:21,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902512302] [2021-11-22 19:33:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:21,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:21,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:21,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902512302] [2021-11-22 19:33:21,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902512302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:21,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:21,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 19:33:21,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509696429] [2021-11-22 19:33:21,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:21,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 19:33:21,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:21,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 19:33:21,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 19:33:21,188 INFO L87 Difference]: Start difference. First operand 260 states and 286 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:21,267 INFO L93 Difference]: Finished difference Result 415 states and 461 transitions. [2021-11-22 19:33:21,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 19:33:21,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-22 19:33:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:21,268 INFO L225 Difference]: With dead ends: 415 [2021-11-22 19:33:21,268 INFO L226 Difference]: Without dead ends: 255 [2021-11-22 19:33:21,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:21,269 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 12 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:21,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1259 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 19:33:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-22 19:33:21,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-11-22 19:33:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 245 states have (on average 1.1387755102040817) internal successors, (279), 254 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2021-11-22 19:33:21,276 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 100 [2021-11-22 19:33:21,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:21,276 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2021-11-22 19:33:21,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2021-11-22 19:33:21,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:33:21,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:21,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:21,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 19:33:21,278 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:21,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:21,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1848393745, now seen corresponding path program 1 times [2021-11-22 19:33:21,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:21,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016991843] [2021-11-22 19:33:21,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:21,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:22,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:22,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016991843] [2021-11-22 19:33:22,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016991843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:22,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:22,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-22 19:33:22,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249861020] [2021-11-22 19:33:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:22,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 19:33:22,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 19:33:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:33:22,292 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:23,460 INFO L93 Difference]: Finished difference Result 567 states and 622 transitions. [2021-11-22 19:33:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:33:23,461 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:33:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:23,462 INFO L225 Difference]: With dead ends: 567 [2021-11-22 19:33:23,462 INFO L226 Difference]: Without dead ends: 442 [2021-11-22 19:33:23,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2021-11-22 19:33:23,463 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1098 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:23,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 1915 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:33:23,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-22 19:33:23,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 377. [2021-11-22 19:33:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 367 states have (on average 1.1416893732970028) internal successors, (419), 376 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 419 transitions. [2021-11-22 19:33:23,476 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 419 transitions. Word has length 101 [2021-11-22 19:33:23,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:23,476 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 419 transitions. [2021-11-22 19:33:23,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 419 transitions. [2021-11-22 19:33:23,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:33:23,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:23,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:23,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 19:33:23,477 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1013563369, now seen corresponding path program 1 times [2021-11-22 19:33:23,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:23,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637265468] [2021-11-22 19:33:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:23,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:23,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:23,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637265468] [2021-11-22 19:33:23,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637265468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:23,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:23,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-22 19:33:23,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909065971] [2021-11-22 19:33:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:23,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 19:33:23,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 19:33:23,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-22 19:33:23,836 INFO L87 Difference]: Start difference. First operand 377 states and 419 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:24,694 INFO L93 Difference]: Finished difference Result 671 states and 737 transitions. [2021-11-22 19:33:24,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 19:33:24,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:33:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:24,696 INFO L225 Difference]: With dead ends: 671 [2021-11-22 19:33:24,696 INFO L226 Difference]: Without dead ends: 570 [2021-11-22 19:33:24,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2021-11-22 19:33:24,697 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 373 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 2263 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:24,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 2263 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:33:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-11-22 19:33:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 422. [2021-11-22 19:33:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 412 states have (on average 1.1310679611650485) internal successors, (466), 421 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 466 transitions. [2021-11-22 19:33:24,716 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 466 transitions. Word has length 101 [2021-11-22 19:33:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:24,716 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 466 transitions. [2021-11-22 19:33:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 466 transitions. [2021-11-22 19:33:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:33:24,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:24,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:24,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 19:33:24,717 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1693621739, now seen corresponding path program 1 times [2021-11-22 19:33:24,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:24,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340664653] [2021-11-22 19:33:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:24,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:24,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340664653] [2021-11-22 19:33:24,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340664653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:24,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:24,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 19:33:24,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394370692] [2021-11-22 19:33:24,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:24,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 19:33:24,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 19:33:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 19:33:24,876 INFO L87 Difference]: Start difference. First operand 422 states and 466 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:25,059 INFO L93 Difference]: Finished difference Result 680 states and 759 transitions. [2021-11-22 19:33:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 19:33:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:33:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:25,061 INFO L225 Difference]: With dead ends: 680 [2021-11-22 19:33:25,061 INFO L226 Difference]: Without dead ends: 507 [2021-11-22 19:33:25,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 19:33:25,062 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 272 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:25,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 564 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:33:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-22 19:33:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 420. [2021-11-22 19:33:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 410 states have (on average 1.1170731707317074) internal successors, (458), 419 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 458 transitions. [2021-11-22 19:33:25,079 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 458 transitions. Word has length 101 [2021-11-22 19:33:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:25,079 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 458 transitions. [2021-11-22 19:33:25,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:25,080 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 458 transitions. [2021-11-22 19:33:25,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-22 19:33:25,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:25,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:25,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 19:33:25,082 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:25,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1409400933, now seen corresponding path program 1 times [2021-11-22 19:33:25,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:25,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615459137] [2021-11-22 19:33:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:25,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:25,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:25,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615459137] [2021-11-22 19:33:25,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615459137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:25,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:25,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 19:33:25,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502772259] [2021-11-22 19:33:25,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:25,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 19:33:25,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:25,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 19:33:25,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-11-22 19:33:25,637 INFO L87 Difference]: Start difference. First operand 420 states and 458 transitions. Second operand has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:26,736 INFO L93 Difference]: Finished difference Result 766 states and 830 transitions. [2021-11-22 19:33:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-22 19:33:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-22 19:33:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:26,738 INFO L225 Difference]: With dead ends: 766 [2021-11-22 19:33:26,738 INFO L226 Difference]: Without dead ends: 653 [2021-11-22 19:33:26,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1158, Unknown=0, NotChecked=0, Total=1482 [2021-11-22 19:33:26,740 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 1213 mSDsluCounter, 1800 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:26,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2069 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:33:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-22 19:33:26,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 408. [2021-11-22 19:33:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 398 states have (on average 1.1155778894472361) internal successors, (444), 407 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:26,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 444 transitions. [2021-11-22 19:33:26,756 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 444 transitions. Word has length 101 [2021-11-22 19:33:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:26,756 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 444 transitions. [2021-11-22 19:33:26,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 15 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 444 transitions. [2021-11-22 19:33:26,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 19:33:26,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:26,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:26,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 19:33:26,758 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 193920036, now seen corresponding path program 1 times [2021-11-22 19:33:26,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040042280] [2021-11-22 19:33:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:26,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:26,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:26,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040042280] [2021-11-22 19:33:26,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040042280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:26,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:26,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 19:33:26,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870101716] [2021-11-22 19:33:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:26,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 19:33:26,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:26,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 19:33:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 19:33:26,919 INFO L87 Difference]: Start difference. First operand 408 states and 444 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:27,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:27,195 INFO L93 Difference]: Finished difference Result 615 states and 672 transitions. [2021-11-22 19:33:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 19:33:27,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 19:33:27,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:27,197 INFO L225 Difference]: With dead ends: 615 [2021-11-22 19:33:27,197 INFO L226 Difference]: Without dead ends: 609 [2021-11-22 19:33:27,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-22 19:33:27,198 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 247 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:27,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 1137 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:33:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-11-22 19:33:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 422. [2021-11-22 19:33:27,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 412 states have (on average 1.1116504854368932) internal successors, (458), 421 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 458 transitions. [2021-11-22 19:33:27,214 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 458 transitions. Word has length 103 [2021-11-22 19:33:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:27,215 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 458 transitions. [2021-11-22 19:33:27,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 458 transitions. [2021-11-22 19:33:27,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 19:33:27,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:27,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:27,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 19:33:27,217 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:27,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:27,217 INFO L85 PathProgramCache]: Analyzing trace with hash -615426590, now seen corresponding path program 1 times [2021-11-22 19:33:27,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071303227] [2021-11-22 19:33:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:27,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:27,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:27,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071303227] [2021-11-22 19:33:27,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071303227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:27,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:27,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 19:33:27,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782179778] [2021-11-22 19:33:27,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:27,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 19:33:27,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 19:33:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-22 19:33:27,596 INFO L87 Difference]: Start difference. First operand 422 states and 458 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:28,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:28,698 INFO L93 Difference]: Finished difference Result 782 states and 845 transitions. [2021-11-22 19:33:28,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 19:33:28,699 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 19:33:28,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:28,700 INFO L225 Difference]: With dead ends: 782 [2021-11-22 19:33:28,700 INFO L226 Difference]: Without dead ends: 523 [2021-11-22 19:33:28,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=258, Invalid=932, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 19:33:28,701 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 447 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:28,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 2201 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 19:33:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-22 19:33:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 416. [2021-11-22 19:33:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 406 states have (on average 1.1059113300492611) internal successors, (449), 415 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 449 transitions. [2021-11-22 19:33:28,717 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 449 transitions. Word has length 103 [2021-11-22 19:33:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:28,717 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 449 transitions. [2021-11-22 19:33:28,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 13 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 449 transitions. [2021-11-22 19:33:28,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 19:33:28,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:28,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:28,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 19:33:28,719 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1523679949, now seen corresponding path program 1 times [2021-11-22 19:33:28,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:28,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249095436] [2021-11-22 19:33:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:28,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:29,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:29,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249095436] [2021-11-22 19:33:29,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249095436] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:29,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878551462] [2021-11-22 19:33:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:29,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:29,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:29,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 19:33:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:29,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 2852 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-22 19:33:29,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:30,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:33:30,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-22 19:33:30,214 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:30,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 23 [2021-11-22 19:33:30,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-22 19:33:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:30,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:30,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878551462] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:30,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:30,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2021-11-22 19:33:30,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946842380] [2021-11-22 19:33:30,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:30,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:33:30,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:33:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-11-22 19:33:30,317 INFO L87 Difference]: Start difference. First operand 416 states and 449 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:31,212 INFO L93 Difference]: Finished difference Result 637 states and 683 transitions. [2021-11-22 19:33:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 19:33:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 19:33:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:31,214 INFO L225 Difference]: With dead ends: 637 [2021-11-22 19:33:31,214 INFO L226 Difference]: Without dead ends: 490 [2021-11-22 19:33:31,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2021-11-22 19:33:31,215 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 702 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:31,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 1844 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 19:33:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-22 19:33:31,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 416. [2021-11-22 19:33:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 406 states have (on average 1.103448275862069) internal successors, (448), 415 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 448 transitions. [2021-11-22 19:33:31,231 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 448 transitions. Word has length 103 [2021-11-22 19:33:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 448 transitions. [2021-11-22 19:33:31,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 448 transitions. [2021-11-22 19:33:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 19:33:31,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:31,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:31,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:31,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-22 19:33:31,456 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -328510391, now seen corresponding path program 1 times [2021-11-22 19:33:31,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:31,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626744791] [2021-11-22 19:33:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:31,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:32,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:32,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626744791] [2021-11-22 19:33:32,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626744791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:32,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:32,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-22 19:33:32,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660532318] [2021-11-22 19:33:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:32,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 19:33:32,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 19:33:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:33:32,056 INFO L87 Difference]: Start difference. First operand 416 states and 448 transitions. Second operand has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:34,372 INFO L93 Difference]: Finished difference Result 790 states and 850 transitions. [2021-11-22 19:33:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-22 19:33:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 19:33:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:34,374 INFO L225 Difference]: With dead ends: 790 [2021-11-22 19:33:34,374 INFO L226 Difference]: Without dead ends: 665 [2021-11-22 19:33:34,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=556, Invalid=2524, Unknown=0, NotChecked=0, Total=3080 [2021-11-22 19:33:34,376 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1367 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:34,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 4531 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-22 19:33:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-22 19:33:34,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 425. [2021-11-22 19:33:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 415 states have (on average 1.106024096385542) internal successors, (459), 424 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 459 transitions. [2021-11-22 19:33:34,393 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 459 transitions. Word has length 103 [2021-11-22 19:33:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:34,393 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 459 transitions. [2021-11-22 19:33:34,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 459 transitions. [2021-11-22 19:33:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 19:33:34,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:34,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 19:33:34,395 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:34,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -70344953, now seen corresponding path program 1 times [2021-11-22 19:33:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:34,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045291101] [2021-11-22 19:33:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:34,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:35,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:35,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045291101] [2021-11-22 19:33:35,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045291101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:35,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005945429] [2021-11-22 19:33:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:35,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:35,428 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:35,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 19:33:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:35,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-22 19:33:35,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:35,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:33:36,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2021-11-22 19:33:36,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-11-22 19:33:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:36,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 19:33:36,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005945429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:36,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 19:33:36,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 24 [2021-11-22 19:33:36,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424087599] [2021-11-22 19:33:36,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:36,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 19:33:36,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:36,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 19:33:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2021-11-22 19:33:36,333 INFO L87 Difference]: Start difference. First operand 425 states and 459 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:36,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:36,759 INFO L93 Difference]: Finished difference Result 607 states and 650 transitions. [2021-11-22 19:33:36,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 19:33:36,759 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-22 19:33:36,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:36,761 INFO L225 Difference]: With dead ends: 607 [2021-11-22 19:33:36,761 INFO L226 Difference]: Without dead ends: 413 [2021-11-22 19:33:36,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=898, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 19:33:36,762 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 1206 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:36,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 845 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 19:33:36,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-22 19:33:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 367. [2021-11-22 19:33:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 357 states have (on average 1.1148459383753502) internal successors, (398), 366 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 398 transitions. [2021-11-22 19:33:36,778 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 398 transitions. Word has length 103 [2021-11-22 19:33:36,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:36,778 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 398 transitions. [2021-11-22 19:33:36,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:36,779 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 398 transitions. [2021-11-22 19:33:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 19:33:36,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:36,779 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:36,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 19:33:36,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-22 19:33:36,995 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1821546799, now seen corresponding path program 1 times [2021-11-22 19:33:36,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498293327] [2021-11-22 19:33:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:36,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:37,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:37,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498293327] [2021-11-22 19:33:37,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498293327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:37,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:37,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 19:33:37,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381980199] [2021-11-22 19:33:37,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:37,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 19:33:37,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 19:33:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 19:33:37,345 INFO L87 Difference]: Start difference. First operand 367 states and 398 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:37,978 INFO L93 Difference]: Finished difference Result 702 states and 761 transitions. [2021-11-22 19:33:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-22 19:33:37,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 19:33:37,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:37,980 INFO L225 Difference]: With dead ends: 702 [2021-11-22 19:33:37,980 INFO L226 Difference]: Without dead ends: 577 [2021-11-22 19:33:37,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-11-22 19:33:37,981 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 337 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:37,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1835 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 19:33:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-22 19:33:37,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 375. [2021-11-22 19:33:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 365 states have (on average 1.1178082191780823) internal successors, (408), 374 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 408 transitions. [2021-11-22 19:33:37,999 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 408 transitions. Word has length 104 [2021-11-22 19:33:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:37,999 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 408 transitions. [2021-11-22 19:33:37,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 408 transitions. [2021-11-22 19:33:38,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-22 19:33:38,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:38,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:38,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 19:33:38,000 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2079712237, now seen corresponding path program 1 times [2021-11-22 19:33:38,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:38,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324315835] [2021-11-22 19:33:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:38,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:38,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:38,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324315835] [2021-11-22 19:33:38,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324315835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:38,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:38,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-22 19:33:38,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304984567] [2021-11-22 19:33:38,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:38,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 19:33:38,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:38,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 19:33:38,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-11-22 19:33:38,414 INFO L87 Difference]: Start difference. First operand 375 states and 408 transitions. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:39,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:39,038 INFO L93 Difference]: Finished difference Result 558 states and 600 transitions. [2021-11-22 19:33:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 19:33:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-22 19:33:39,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:39,039 INFO L225 Difference]: With dead ends: 558 [2021-11-22 19:33:39,040 INFO L226 Difference]: Without dead ends: 415 [2021-11-22 19:33:39,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:33:39,041 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 841 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:39,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1378 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 19:33:39,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-11-22 19:33:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 368. [2021-11-22 19:33:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 358 states have (on average 1.1145251396648044) internal successors, (399), 367 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 399 transitions. [2021-11-22 19:33:39,055 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 399 transitions. Word has length 104 [2021-11-22 19:33:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:39,055 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 399 transitions. [2021-11-22 19:33:39,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 399 transitions. [2021-11-22 19:33:39,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 19:33:39,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:39,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:39,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 19:33:39,057 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:39,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:39,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2126574579, now seen corresponding path program 1 times [2021-11-22 19:33:39,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:39,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596026054] [2021-11-22 19:33:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:39,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:39,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:39,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596026054] [2021-11-22 19:33:39,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596026054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:39,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:39,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-22 19:33:39,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470366204] [2021-11-22 19:33:39,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:39,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 19:33:39,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 19:33:39,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-22 19:33:39,503 INFO L87 Difference]: Start difference. First operand 368 states and 399 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:41,105 INFO L93 Difference]: Finished difference Result 570 states and 608 transitions. [2021-11-22 19:33:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-22 19:33:41,105 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-22 19:33:41,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:41,106 INFO L225 Difference]: With dead ends: 570 [2021-11-22 19:33:41,106 INFO L226 Difference]: Without dead ends: 445 [2021-11-22 19:33:41,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=537, Invalid=2013, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 19:33:41,107 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 1907 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:41,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 2467 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:33:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-11-22 19:33:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 366. [2021-11-22 19:33:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 356 states have (on average 1.1095505617977528) internal successors, (395), 365 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 395 transitions. [2021-11-22 19:33:41,127 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 395 transitions. Word has length 106 [2021-11-22 19:33:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:41,127 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 395 transitions. [2021-11-22 19:33:41,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 395 transitions. [2021-11-22 19:33:41,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 19:33:41,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:41,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:41,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 19:33:41,129 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:41,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:41,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1868409141, now seen corresponding path program 1 times [2021-11-22 19:33:41,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:41,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416919844] [2021-11-22 19:33:41,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:41,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 19:33:42,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:42,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416919844] [2021-11-22 19:33:42,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416919844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 19:33:42,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 19:33:42,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-22 19:33:42,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808074742] [2021-11-22 19:33:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 19:33:42,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 19:33:42,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 19:33:42,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 19:33:42,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-11-22 19:33:42,602 INFO L87 Difference]: Start difference. First operand 366 states and 395 transitions. Second operand has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:46,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 19:33:46,405 INFO L93 Difference]: Finished difference Result 543 states and 579 transitions. [2021-11-22 19:33:46,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-22 19:33:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-22 19:33:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 19:33:46,420 INFO L225 Difference]: With dead ends: 543 [2021-11-22 19:33:46,420 INFO L226 Difference]: Without dead ends: 420 [2021-11-22 19:33:46,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=691, Invalid=2615, Unknown=0, NotChecked=0, Total=3306 [2021-11-22 19:33:46,422 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 3367 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-22 19:33:46,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3367 Valid, 1704 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1042 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-22 19:33:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-22 19:33:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 359. [2021-11-22 19:33:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 349 states have (on average 1.1088825214899714) internal successors, (387), 358 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 387 transitions. [2021-11-22 19:33:46,450 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 387 transitions. Word has length 106 [2021-11-22 19:33:46,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 19:33:46,451 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 387 transitions. [2021-11-22 19:33:46,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.7857142857142856) internal successors, (106), 28 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 19:33:46,451 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 387 transitions. [2021-11-22 19:33:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-22 19:33:46,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 19:33:46,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 19:33:46,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 19:33:46,452 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-22 19:33:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 19:33:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash 735382535, now seen corresponding path program 1 times [2021-11-22 19:33:46,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 19:33:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269213344] [2021-11-22 19:33:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:46,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 19:33:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:47,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 19:33:47,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269213344] [2021-11-22 19:33:47,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269213344] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 19:33:47,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41227515] [2021-11-22 19:33:47,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 19:33:47,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 19:33:47,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 19:33:47,232 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 19:33:47,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 19:33:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 19:33:47,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-22 19:33:47,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 19:33:47,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 19:33:47,935 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 19:33:47,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 19 [2021-11-22 19:33:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:33:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:33:48,463 INFO L354 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2021-11-22 19:33:48,464 INFO L388 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 3 case distinctions, treesize of input 54 treesize of output 58 [2021-11-22 19:33:48,822 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 19:33:48,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-22 19:33:49,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:33:49,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 19:33:49,208 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-11-22 19:33:49,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 61 [2021-11-22 19:33:49,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 19:33:49,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-22 19:33:49,521 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-22 19:33:49,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 68 [2021-11-22 19:33:49,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 19:33:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 19:33:49,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 19:33:50,104 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_memcpy_impl_~dst#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ (* (div (+ .cse1 18446744073709551615 (* .cse0 (- 1))) 18446744073709551616) (- 18446744073709551616)) .cse1)) 18446744073709551616))))))) is different from false [2021-11-22 19:33:50,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)) v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ (* (div (+ (* .cse0 (- 1)) 18446744073709551615 .cse1) 18446744073709551616) (- 18446744073709551616)) .cse1)) 18446744073709551616))))))) is different from false [2021-11-22 19:33:50,163 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int)) (v_ArrVal_2842 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|) v_ArrVal_2842)) |c_ULTIMATE.start_aws_mem_acquire_#res#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ .cse1 (* (div (+ .cse1 18446744073709551615 (* .cse0 (- 1))) 18446744073709551616) (- 18446744073709551616)))) 18446744073709551616)) 18446744073709551615))))) is different from false [2021-11-22 19:33:50,180 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int)) (v_ArrVal_2842 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|) v_ArrVal_2842)) |c_ULTIMATE.start_aws_mem_acquire_~mem~0#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ .cse1 (* (div (+ 18446744073709551615 (* .cse0 (- 1)) .cse1) 18446744073709551616) (- 18446744073709551616)))) 18446744073709551616))))))) is different from false [2021-11-22 19:33:50,196 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int)) (v_ArrVal_2842 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|) v_ArrVal_2842)) |c_ULTIMATE.start_can_fail_malloc_#res#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ .cse1 (* (div (+ .cse1 18446744073709551615 (* .cse0 (- 1))) 18446744073709551616) (- 18446744073709551616)))) 18446744073709551616))))))) is different from false [2021-11-22 19:33:50,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int)) (v_ArrVal_2842 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|) v_ArrVal_2842)) |c_ULTIMATE.start_can_fail_malloc_#t~ite556#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ (* (div (+ (* .cse0 (- 1)) 18446744073709551615 .cse1) 18446744073709551616) (- 18446744073709551616)) .cse1)) 18446744073709551616))))))) is different from false [2021-11-22 19:33:50,222 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2846 (Array Int Int)) (v_ArrVal_2842 Int)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|) v_ArrVal_2842)) |c_ULTIMATE.start_bounded_malloc_#res#1.base| v_ArrVal_2846) |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base|))) (let ((.cse0 (select .cse2 (+ 16 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|)))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (let ((.cse1 (select .cse2 |c_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset|))) (+ .cse1 (* (div (+ (* .cse0 (- 1)) 18446744073709551615 .cse1) 18446744073709551616) (- 18446744073709551616)))) 18446744073709551616))))))) is different from false [2021-11-22 19:33:57,192 INFO L354 Elim1Store]: treesize reduction 1029, result has 21.2 percent of original size [2021-11-22 19:33:57,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 8169 treesize of output 7739 [2021-11-22 19:33:57,926 INFO L354 Elim1Store]: treesize reduction 90, result has 66.0 percent of original size [2021-11-22 19:33:57,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 9104 treesize of output 7896 [2021-11-22 19:33:57,981 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-22 19:33:57,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7896 treesize of output 7884 Killed by 15