./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_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_linked_list_swap_contents_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 fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-22 20:27:38,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:27:38,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:27:38,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:27:38,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:27:38,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:27:38,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:27:38,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:27:38,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:27:38,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:27:38,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:27:38,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:27:38,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:27:38,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:27:38,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:27:38,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:27:38,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:27:38,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:27:38,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:27:38,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:27:38,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:27:38,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:27:38,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:27:38,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:27:38,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:27:38,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:27:38,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:27:38,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:27:38,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:27:38,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:27:38,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:27:38,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:27:38,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:27:38,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:27:38,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:27:38,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:27:38,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:27:38,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:27:38,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:27:38,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:27:38,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:27:38,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:27:38,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:27:38,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:27:38,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:27:38,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:27:38,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:27:38,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:27:38,285 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:27:38,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:27:38,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:27:38,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:27:38,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:27:38,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:27:38,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:27:38,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:27:38,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:27:38,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:27:38,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:27:38,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:27:38,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:27:38,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:27:38,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:27:38,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:27:38,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:27:38,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:27:38,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:27:38,289 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:27:38,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:27:38,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:27:38,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:27:38,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fab5c58d108ab0116c19af669265df6088034967e28562e9e7d2713e6ada683d [2021-11-22 20:27:38,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:27:38,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:27:38,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:27:38,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:27:38,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:27:38,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-22 20:27:38,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5891d2712/e3c4d00e13b14110bb5f05ada3a999fa/FLAG824c68d50 [2021-11-22 20:27:39,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:27:39,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_swap_contents_harness.i [2021-11-22 20:27:39,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5891d2712/e3c4d00e13b14110bb5f05ada3a999fa/FLAG824c68d50 [2021-11-22 20:27:39,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5891d2712/e3c4d00e13b14110bb5f05ada3a999fa [2021-11-22 20:27:39,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:27:39,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:27:39,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:27:39,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:27:39,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:27:39,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:27:39" (1/1) ... [2021-11-22 20:27:39,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236fe348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:39, skipping insertion in model container [2021-11-22 20:27:39,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:27:39" (1/1) ... [2021-11-22 20:27:39,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:27:39,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:27:39,876 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-22 20:27:39,881 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-22 20:27:40,411 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,426 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,428 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,430 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,431 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,432 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,661 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:27:40,662 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:27:40,663 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:27:40,669 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:27:40,670 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:27:40,670 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:27:40,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:27:40,671 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:27:40,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:27:40,672 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:27:40,785 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:27:40,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:27:40,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:27:40,870 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_linked_list_swap_contents_harness.i[4503,4516] [2021-11-22 20:27:40,876 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_linked_list_swap_contents_harness.i[4563,4576] [2021-11-22 20:27:40,941 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,954 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,960 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,961 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-22 20:27:40,984 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-22 20:27:40,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-22 20:27:40,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-22 20:27:40,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-22 20:27:40,991 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-22 20:27:40,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-22 20:27:40,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-22 20:27:40,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-22 20:27:40,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-22 20:27:40,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-22 20:27:41,012 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-22 20:27:41,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:27:41,215 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:27:41,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41 WrapperNode [2021-11-22 20:27:41,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:27:41,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:27:41,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:27:41,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:27:41,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,345 INFO L137 Inliner]: procedures = 679, calls = 1080, calls flagged for inlining = 555, calls inlined = 64, statements flattened = 997 [2021-11-22 20:27:41,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:27:41,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:27:41,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:27:41,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:27:41,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:27:41,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:27:41,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:27:41,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:27:41,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (1/1) ... [2021-11-22 20:27:41,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:27:41,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:27:41,456 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 20:27:41,469 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 20:27:41,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:27:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:27:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:27:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:27:41,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:27:41,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:27:41,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:27:41,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:27:41,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:27:41,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:27:41,731 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:27:41,732 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:27:42,393 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:27:42,401 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:27:42,401 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-22 20:27:42,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:27:42 BoogieIcfgContainer [2021-11-22 20:27:42,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:27:42,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:27:42,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:27:42,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:27:42,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:27:39" (1/3) ... [2021-11-22 20:27:42,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66240c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:27:42, skipping insertion in model container [2021-11-22 20:27:42,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:27:41" (2/3) ... [2021-11-22 20:27:42,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66240c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:27:42, skipping insertion in model container [2021-11-22 20:27:42,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:27:42" (3/3) ... [2021-11-22 20:27:42,409 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness.i [2021-11-22 20:27:42,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:27:42,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-11-22 20:27:42,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:27:42,454 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 20:27:42,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-11-22 20:27:42,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 269 states, 254 states have (on average 1.562992125984252) internal successors, (397), 268 states have internal predecessors, (397), 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 20:27:42,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 20:27:42,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:42,476 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 20:27:42,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1588992252, now seen corresponding path program 1 times [2021-11-22 20:27:42,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:42,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602307789] [2021-11-22 20:27:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:42,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:42,805 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 20:27:42,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:42,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602307789] [2021-11-22 20:27:42,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602307789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:42,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:42,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:27:42,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638887717] [2021-11-22 20:27:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:42,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 20:27:42,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 20:27:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 20:27:42,843 INFO L87 Difference]: Start difference. First operand has 269 states, 254 states have (on average 1.562992125984252) internal successors, (397), 268 states have internal predecessors, (397), 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 26.5) internal successors, (53), 2 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 20:27:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:42,884 INFO L93 Difference]: Finished difference Result 534 states and 789 transitions. [2021-11-22 20:27:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 20:27:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 20:27:42,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:42,895 INFO L225 Difference]: With dead ends: 534 [2021-11-22 20:27:42,895 INFO L226 Difference]: Without dead ends: 262 [2021-11-22 20:27:42,898 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 20:27:42,901 INFO L933 BasicCegarLoop]: 362 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, 362 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 20:27:42,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:27:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-22 20:27:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-22 20:27:42,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 248 states have (on average 1.4274193548387097) internal successors, (354), 261 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 20:27:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 354 transitions. [2021-11-22 20:27:42,956 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 354 transitions. Word has length 53 [2021-11-22 20:27:42,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:42,956 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 354 transitions. [2021-11-22 20:27:42,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 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 20:27:42,956 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 354 transitions. [2021-11-22 20:27:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 20:27:42,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:42,958 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 20:27:42,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:27:42,959 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1043336318, now seen corresponding path program 1 times [2021-11-22 20:27:42,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:42,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093948140] [2021-11-22 20:27:42,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:42,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:43,200 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 20:27:43,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:43,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093948140] [2021-11-22 20:27:43,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093948140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:43,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:43,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:27:43,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372482001] [2021-11-22 20:27:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:43,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:27:43,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:27:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:27:43,203 INFO L87 Difference]: Start difference. First operand 262 states and 354 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 20:27:43,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:43,395 INFO L93 Difference]: Finished difference Result 567 states and 786 transitions. [2021-11-22 20:27:43,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:27:43,395 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 20:27:43,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:43,399 INFO L225 Difference]: With dead ends: 567 [2021-11-22 20:27:43,399 INFO L226 Difference]: Without dead ends: 326 [2021-11-22 20:27:43,400 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 20:27:43,401 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 76 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:43,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 989 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:43,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-22 20:27:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 278. [2021-11-22 20:27:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 264 states have (on average 1.4015151515151516) internal successors, (370), 277 states have internal predecessors, (370), 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 20:27:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 370 transitions. [2021-11-22 20:27:43,416 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 370 transitions. Word has length 53 [2021-11-22 20:27:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:43,416 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 370 transitions. [2021-11-22 20:27:43,416 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 20:27:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 370 transitions. [2021-11-22 20:27:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 20:27:43,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:43,418 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 20:27:43,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:27:43,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash 199330816, now seen corresponding path program 1 times [2021-11-22 20:27:43,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:43,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070660314] [2021-11-22 20:27:43,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:43,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:43,533 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 20:27:43,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:43,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070660314] [2021-11-22 20:27:43,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070660314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:43,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:43,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:27:43,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579416179] [2021-11-22 20:27:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:43,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:27:43,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:27:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:27:43,536 INFO L87 Difference]: Start difference. First operand 278 states and 370 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 20:27:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:43,713 INFO L93 Difference]: Finished difference Result 563 states and 765 transitions. [2021-11-22 20:27:43,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:27:43,714 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 20:27:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:43,716 INFO L225 Difference]: With dead ends: 563 [2021-11-22 20:27:43,716 INFO L226 Difference]: Without dead ends: 310 [2021-11-22 20:27:43,717 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 20:27:43,717 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 20 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:43,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 946 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:27:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-22 20:27:43,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 302. [2021-11-22 20:27:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3680555555555556) internal successors, (394), 301 states have internal predecessors, (394), 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 20:27:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 394 transitions. [2021-11-22 20:27:43,727 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 394 transitions. Word has length 53 [2021-11-22 20:27:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:43,728 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 394 transitions. [2021-11-22 20:27:43,728 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 20:27:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 394 transitions. [2021-11-22 20:27:43,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 20:27:43,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:43,730 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 20:27:43,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:27:43,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:43,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:43,731 INFO L85 PathProgramCache]: Analyzing trace with hash 126944258, now seen corresponding path program 1 times [2021-11-22 20:27:43,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:43,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690630265] [2021-11-22 20:27:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:43,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:43,850 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 20:27:43,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690630265] [2021-11-22 20:27:43,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690630265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:43,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:43,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:27:43,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768251441] [2021-11-22 20:27:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:43,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:27:43,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:43,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:27:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:27:43,853 INFO L87 Difference]: Start difference. First operand 302 states and 394 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 20:27:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:43,990 INFO L93 Difference]: Finished difference Result 560 states and 730 transitions. [2021-11-22 20:27:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:27:43,991 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 20:27:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:43,992 INFO L225 Difference]: With dead ends: 560 [2021-11-22 20:27:43,992 INFO L226 Difference]: Without dead ends: 302 [2021-11-22 20:27:43,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:27:43,994 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 655 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:43,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 651 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:27:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-22 20:27:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-11-22 20:27:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 288 states have (on average 1.3576388888888888) internal successors, (391), 301 states have internal predecessors, (391), 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 20:27:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 391 transitions. [2021-11-22 20:27:44,005 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 391 transitions. Word has length 53 [2021-11-22 20:27:44,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:44,006 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 391 transitions. [2021-11-22 20:27:44,006 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 20:27:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 391 transitions. [2021-11-22 20:27:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 20:27:44,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:44,008 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 20:27:44,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 20:27:44,008 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash 636417348, now seen corresponding path program 1 times [2021-11-22 20:27:44,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:44,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575198213] [2021-11-22 20:27:44,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:44,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:44,204 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 20:27:44,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:44,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575198213] [2021-11-22 20:27:44,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575198213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:44,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:44,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:27:44,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787197711] [2021-11-22 20:27:44,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:44,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:27:44,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:44,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:27:44,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:27:44,206 INFO L87 Difference]: Start difference. First operand 302 states and 391 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 20:27:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:44,318 INFO L93 Difference]: Finished difference Result 648 states and 814 transitions. [2021-11-22 20:27:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:27:44,319 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 20:27:44,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:44,320 INFO L225 Difference]: With dead ends: 648 [2021-11-22 20:27:44,320 INFO L226 Difference]: Without dead ends: 374 [2021-11-22 20:27:44,321 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 20:27:44,326 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 80 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:44,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 993 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:27:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-22 20:27:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 292. [2021-11-22 20:27:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 278 states have (on average 1.341726618705036) internal successors, (373), 291 states have internal predecessors, (373), 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 20:27:44,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 373 transitions. [2021-11-22 20:27:44,339 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 373 transitions. Word has length 53 [2021-11-22 20:27:44,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:44,339 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 373 transitions. [2021-11-22 20:27:44,339 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 20:27:44,339 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 373 transitions. [2021-11-22 20:27:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 20:27:44,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:44,343 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 20:27:44,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 20:27:44,344 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1640221954, now seen corresponding path program 1 times [2021-11-22 20:27:44,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669870054] [2021-11-22 20:27:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:44,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:44,490 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 20:27:44,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669870054] [2021-11-22 20:27:44,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669870054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:44,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:44,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:27:44,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990412055] [2021-11-22 20:27:44,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:44,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:27:44,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:44,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:27:44,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:27:44,493 INFO L87 Difference]: Start difference. First operand 292 states and 373 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 20:27:44,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:44,643 INFO L93 Difference]: Finished difference Result 604 states and 761 transitions. [2021-11-22 20:27:44,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:27:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 20:27:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:44,645 INFO L225 Difference]: With dead ends: 604 [2021-11-22 20:27:44,645 INFO L226 Difference]: Without dead ends: 346 [2021-11-22 20:27:44,645 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 20:27:44,646 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 475 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:44,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 905 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:27:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-22 20:27:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 292. [2021-11-22 20:27:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 278 states have (on average 1.3345323741007193) internal successors, (371), 291 states have internal predecessors, (371), 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 20:27:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 371 transitions. [2021-11-22 20:27:44,676 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 371 transitions. Word has length 57 [2021-11-22 20:27:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:44,676 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 371 transitions. [2021-11-22 20:27:44,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 20:27:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 371 transitions. [2021-11-22 20:27:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 20:27:44,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:44,677 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] [2021-11-22 20:27:44,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 20:27:44,677 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:44,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:44,678 INFO L85 PathProgramCache]: Analyzing trace with hash 557780064, now seen corresponding path program 1 times [2021-11-22 20:27:44,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:44,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661659991] [2021-11-22 20:27:44,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:44,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:44,802 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 20:27:44,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:44,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661659991] [2021-11-22 20:27:44,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661659991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:44,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:44,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:27:44,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164087357] [2021-11-22 20:27:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:44,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:27:44,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:44,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:27:44,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:27:44,806 INFO L87 Difference]: Start difference. First operand 292 states and 371 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 20:27:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:45,016 INFO L93 Difference]: Finished difference Result 690 states and 858 transitions. [2021-11-22 20:27:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:27:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-11-22 20:27:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:45,018 INFO L225 Difference]: With dead ends: 690 [2021-11-22 20:27:45,018 INFO L226 Difference]: Without dead ends: 431 [2021-11-22 20:27:45,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:27:45,022 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 716 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:45,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1222 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-22 20:27:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 294. [2021-11-22 20:27:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 280 states have (on average 1.332142857142857) internal successors, (373), 293 states have internal predecessors, (373), 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 20:27:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 373 transitions. [2021-11-22 20:27:45,031 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 373 transitions. Word has length 59 [2021-11-22 20:27:45,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:45,036 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 373 transitions. [2021-11-22 20:27:45,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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 20:27:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 373 transitions. [2021-11-22 20:27:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 20:27:45,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:45,038 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] [2021-11-22 20:27:45,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 20:27:45,039 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:45,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1331039435, now seen corresponding path program 1 times [2021-11-22 20:27:45,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:45,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578652152] [2021-11-22 20:27:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:45,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:45,182 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 20:27:45,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:45,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578652152] [2021-11-22 20:27:45,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578652152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:45,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:45,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:27:45,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240271818] [2021-11-22 20:27:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:45,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:27:45,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:45,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:27:45,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:27:45,185 INFO L87 Difference]: Start difference. First operand 294 states and 373 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 20:27:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:45,399 INFO L93 Difference]: Finished difference Result 812 states and 1004 transitions. [2021-11-22 20:27:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:27:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 60 [2021-11-22 20:27:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:45,401 INFO L225 Difference]: With dead ends: 812 [2021-11-22 20:27:45,401 INFO L226 Difference]: Without dead ends: 552 [2021-11-22 20:27:45,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:27:45,402 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 926 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:45,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 1167 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-22 20:27:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 296. [2021-11-22 20:27:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 282 states have (on average 1.3297872340425532) internal successors, (375), 295 states have internal predecessors, (375), 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 20:27:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 375 transitions. [2021-11-22 20:27:45,411 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 375 transitions. Word has length 60 [2021-11-22 20:27:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:45,411 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 375 transitions. [2021-11-22 20:27:45,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 20:27:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 375 transitions. [2021-11-22 20:27:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 20:27:45,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:45,412 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] [2021-11-22 20:27:45,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 20:27:45,412 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1767285390, now seen corresponding path program 1 times [2021-11-22 20:27:45,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:45,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114316135] [2021-11-22 20:27:45,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:45,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:45,587 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 20:27:45,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:45,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114316135] [2021-11-22 20:27:45,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114316135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:45,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:45,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 20:27:45,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756473420] [2021-11-22 20:27:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:45,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 20:27:45,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 20:27:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:27:45,589 INFO L87 Difference]: Start difference. First operand 296 states and 375 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 20:27:47,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:47,883 INFO L93 Difference]: Finished difference Result 1661 states and 1968 transitions. [2021-11-22 20:27:47,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-22 20:27:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 65 [2021-11-22 20:27:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:47,888 INFO L225 Difference]: With dead ends: 1661 [2021-11-22 20:27:47,888 INFO L226 Difference]: Without dead ends: 1392 [2021-11-22 20:27:47,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2021-11-22 20:27:47,890 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 2361 mSDsluCounter, 2611 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:47,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2361 Valid, 3189 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1780 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 20:27:47,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-11-22 20:27:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 332. [2021-11-22 20:27:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3553459119496856) internal successors, (431), 331 states have internal predecessors, (431), 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 20:27:47,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 431 transitions. [2021-11-22 20:27:47,911 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 431 transitions. Word has length 65 [2021-11-22 20:27:47,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:47,913 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 431 transitions. [2021-11-22 20:27:47,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 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 20:27:47,913 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 431 transitions. [2021-11-22 20:27:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 20:27:47,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:47,916 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] [2021-11-22 20:27:47,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 20:27:47,916 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:47,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1498322608, now seen corresponding path program 1 times [2021-11-22 20:27:47,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:47,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864798354] [2021-11-22 20:27:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:47,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:48,067 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 20:27:48,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:48,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864798354] [2021-11-22 20:27:48,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864798354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:48,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:48,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:27:48,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156701708] [2021-11-22 20:27:48,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:48,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:27:48,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:48,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:27:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:27:48,070 INFO L87 Difference]: Start difference. First operand 332 states and 431 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 20:27:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:48,272 INFO L93 Difference]: Finished difference Result 749 states and 954 transitions. [2021-11-22 20:27:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:27:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-22 20:27:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:48,276 INFO L225 Difference]: With dead ends: 749 [2021-11-22 20:27:48,276 INFO L226 Difference]: Without dead ends: 483 [2021-11-22 20:27:48,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:27:48,277 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1328 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:48,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1328 Valid, 711 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-22 20:27:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 332. [2021-11-22 20:27:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 331 states have internal predecessors, (428), 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 20:27:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 428 transitions. [2021-11-22 20:27:48,307 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 428 transitions. Word has length 65 [2021-11-22 20:27:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 428 transitions. [2021-11-22 20:27:48,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 20:27:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 428 transitions. [2021-11-22 20:27:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 20:27:48,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:48,310 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] [2021-11-22 20:27:48,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 20:27:48,311 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:48,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1057412942, now seen corresponding path program 1 times [2021-11-22 20:27:48,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281932681] [2021-11-22 20:27:48,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:48,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:48,443 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 20:27:48,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:48,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281932681] [2021-11-22 20:27:48,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281932681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:48,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:48,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:27:48,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729296056] [2021-11-22 20:27:48,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:48,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:27:48,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:48,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:27:48,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:27:48,445 INFO L87 Difference]: Start difference. First operand 332 states and 428 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 20:27:48,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:48,763 INFO L93 Difference]: Finished difference Result 944 states and 1181 transitions. [2021-11-22 20:27:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:27:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 67 [2021-11-22 20:27:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:48,766 INFO L225 Difference]: With dead ends: 944 [2021-11-22 20:27:48,766 INFO L226 Difference]: Without dead ends: 677 [2021-11-22 20:27:48,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:27:48,767 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 1979 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:48,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 1062 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-11-22 20:27:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 332. [2021-11-22 20:27:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3364779874213837) internal successors, (425), 331 states have internal predecessors, (425), 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 20:27:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 425 transitions. [2021-11-22 20:27:48,782 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 425 transitions. Word has length 67 [2021-11-22 20:27:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:48,782 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 425 transitions. [2021-11-22 20:27:48,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 20:27:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 425 transitions. [2021-11-22 20:27:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:27:48,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:48,783 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 20:27:48,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 20:27:48,784 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:48,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2063213896, now seen corresponding path program 1 times [2021-11-22 20:27:48,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:48,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434304378] [2021-11-22 20:27:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:48,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:48,968 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 20:27:48,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:48,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434304378] [2021-11-22 20:27:48,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434304378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:48,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:48,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:27:48,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505974239] [2021-11-22 20:27:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:48,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:27:48,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:27:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:27:48,970 INFO L87 Difference]: Start difference. First operand 332 states and 425 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 20:27:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:49,336 INFO L93 Difference]: Finished difference Result 947 states and 1179 transitions. [2021-11-22 20:27:49,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:27:49,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 20:27:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:49,339 INFO L225 Difference]: With dead ends: 947 [2021-11-22 20:27:49,339 INFO L226 Difference]: Without dead ends: 680 [2021-11-22 20:27:49,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:27:49,340 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 2271 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:49,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 960 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:27:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-11-22 20:27:49,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 332. [2021-11-22 20:27:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3270440251572326) internal successors, (422), 331 states have internal predecessors, (422), 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 20:27:49,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 422 transitions. [2021-11-22 20:27:49,356 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 422 transitions. Word has length 68 [2021-11-22 20:27:49,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:49,357 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 422 transitions. [2021-11-22 20:27:49,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 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 20:27:49,357 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 422 transitions. [2021-11-22 20:27:49,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 20:27:49,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:49,358 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] [2021-11-22 20:27:49,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 20:27:49,358 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1235419584, now seen corresponding path program 1 times [2021-11-22 20:27:49,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:49,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760920032] [2021-11-22 20:27:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:49,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:49,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:49,512 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 20:27:49,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:49,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760920032] [2021-11-22 20:27:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760920032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:49,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:49,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:27:49,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637800550] [2021-11-22 20:27:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:49,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:27:49,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:27:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:27:49,514 INFO L87 Difference]: Start difference. First operand 332 states and 422 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 20:27:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:49,945 INFO L93 Difference]: Finished difference Result 946 states and 1175 transitions. [2021-11-22 20:27:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:27:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 73 [2021-11-22 20:27:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:49,948 INFO L225 Difference]: With dead ends: 946 [2021-11-22 20:27:49,948 INFO L226 Difference]: Without dead ends: 671 [2021-11-22 20:27:49,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:27:49,949 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 2205 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:49,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2205 Valid, 1225 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:27:49,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-22 20:27:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 332. [2021-11-22 20:27:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3176100628930818) internal successors, (419), 331 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 20:27:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 419 transitions. [2021-11-22 20:27:49,967 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 419 transitions. Word has length 73 [2021-11-22 20:27:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:49,967 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 419 transitions. [2021-11-22 20:27:49,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 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 20:27:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 419 transitions. [2021-11-22 20:27:49,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 20:27:49,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:49,968 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] [2021-11-22 20:27:49,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 20:27:49,969 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -687808450, now seen corresponding path program 1 times [2021-11-22 20:27:49,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419716019] [2021-11-22 20:27:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:49,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:50,077 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 20:27:50,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:50,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419716019] [2021-11-22 20:27:50,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419716019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:50,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:50,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:27:50,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296243691] [2021-11-22 20:27:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:50,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:27:50,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:27:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:27:50,080 INFO L87 Difference]: Start difference. First operand 332 states and 419 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 20:27:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:50,247 INFO L93 Difference]: Finished difference Result 863 states and 1053 transitions. [2021-11-22 20:27:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:27:50,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-22 20:27:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:50,249 INFO L225 Difference]: With dead ends: 863 [2021-11-22 20:27:50,249 INFO L226 Difference]: Without dead ends: 567 [2021-11-22 20:27:50,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:27:50,251 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 231 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:50,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1570 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:27:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-22 20:27:50,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 332. [2021-11-22 20:27:50,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 318 states have (on average 1.3113207547169812) internal successors, (417), 331 states have internal predecessors, (417), 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 20:27:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 417 transitions. [2021-11-22 20:27:50,266 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 417 transitions. Word has length 73 [2021-11-22 20:27:50,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:50,266 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 417 transitions. [2021-11-22 20:27:50,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 20:27:50,266 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 417 transitions. [2021-11-22 20:27:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 20:27:50,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:50,267 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 20:27:50,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 20:27:50,267 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:50,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:50,268 INFO L85 PathProgramCache]: Analyzing trace with hash -32922338, now seen corresponding path program 1 times [2021-11-22 20:27:50,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:50,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661457380] [2021-11-22 20:27:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:50,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 20:27:50,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:50,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661457380] [2021-11-22 20:27:50,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661457380] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:27:50,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062111852] [2021-11-22 20:27:50,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:50,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:27:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:27:50,431 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 20:27:50,462 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 20:27:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:51,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-22 20:27:51,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:27:51,463 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 32 treesize of output 24 [2021-11-22 20:27:51,466 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 21 treesize of output 13 [2021-11-22 20:27:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 20:27:51,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:27:51,702 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-22 20:27:51,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-22 20:27:51,707 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-22 20:27:51,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-22 20:27:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 20:27:51,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062111852] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 20:27:51,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 20:27:51,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 11] total 20 [2021-11-22 20:27:51,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876326626] [2021-11-22 20:27:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:51,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:27:51,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:27:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:27:51,755 INFO L87 Difference]: Start difference. First operand 332 states and 417 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 20:27:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:52,514 INFO L93 Difference]: Finished difference Result 1147 states and 1396 transitions. [2021-11-22 20:27:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:27:52,515 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 20:27:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:52,517 INFO L225 Difference]: With dead ends: 1147 [2021-11-22 20:27:52,518 INFO L226 Difference]: Without dead ends: 853 [2021-11-22 20:27:52,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-11-22 20:27:52,519 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 814 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:52,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 1785 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 20:27:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-11-22 20:27:52,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 364. [2021-11-22 20:27:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 350 states have (on average 1.2914285714285714) internal successors, (452), 363 states have internal predecessors, (452), 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 20:27:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 452 transitions. [2021-11-22 20:27:52,541 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 452 transitions. Word has length 77 [2021-11-22 20:27:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:52,541 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 452 transitions. [2021-11-22 20:27:52,541 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 20:27:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 452 transitions. [2021-11-22 20:27:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 20:27:52,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:52,542 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:27:52,571 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 20:27:52,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 20:27:52,744 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1206412652, now seen corresponding path program 1 times [2021-11-22 20:27:52,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562177171] [2021-11-22 20:27:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:52,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:27:52,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:52,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562177171] [2021-11-22 20:27:52,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562177171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:27:52,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:27:52,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:27:52,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162496351] [2021-11-22 20:27:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:27:52,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:27:52,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:52,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:27:52,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:27:52,855 INFO L87 Difference]: Start difference. First operand 364 states and 452 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 20:27:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:27:53,109 INFO L93 Difference]: Finished difference Result 827 states and 1008 transitions. [2021-11-22 20:27:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:27:53,109 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 78 [2021-11-22 20:27:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:27:53,111 INFO L225 Difference]: With dead ends: 827 [2021-11-22 20:27:53,111 INFO L226 Difference]: Without dead ends: 493 [2021-11-22 20:27:53,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 20:27:53,112 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 672 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:27:53,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1528 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:27:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-22 20:27:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 364. [2021-11-22 20:27:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 350 states have (on average 1.2857142857142858) internal successors, (450), 363 states have internal predecessors, (450), 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 20:27:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 450 transitions. [2021-11-22 20:27:53,132 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 450 transitions. Word has length 78 [2021-11-22 20:27:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:27:53,133 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 450 transitions. [2021-11-22 20:27:53,133 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 20:27:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 450 transitions. [2021-11-22 20:27:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 20:27:53,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:27:53,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:27:53,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 20:27:53,134 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:27:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:27:53,134 INFO L85 PathProgramCache]: Analyzing trace with hash 877626753, now seen corresponding path program 1 times [2021-11-22 20:27:53,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:27:53,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857974144] [2021-11-22 20:27:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:53,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:27:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:27:53,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:27:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857974144] [2021-11-22 20:27:53,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857974144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:27:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790439593] [2021-11-22 20:27:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:27:53,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:27:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:27:53,576 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 20:27:53,603 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 20:27:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:27:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-22 20:27:54,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:27:54,215 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:27:54,215 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 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-22 20:27:54,226 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:27:54,226 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 1 case distinctions, treesize of input 19 treesize of output 24 [2021-11-22 20:27:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:27:54,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:27:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:27:55,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790439593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:27:55,424 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:27:55,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 10] total 34 [2021-11-22 20:27:55,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535012471] [2021-11-22 20:27:55,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:27:55,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-22 20:27:55,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:27:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-22 20:27:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 20:27:55,427 INFO L87 Difference]: Start difference. First operand 364 states and 450 transitions. Second operand has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 34 states have internal predecessors, (207), 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 20:28:14,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:14,138 INFO L93 Difference]: Finished difference Result 6276 states and 7264 transitions. [2021-11-22 20:28:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2021-11-22 20:28:14,138 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 34 states have internal predecessors, (207), 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 79 [2021-11-22 20:28:14,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:14,155 INFO L225 Difference]: With dead ends: 6276 [2021-11-22 20:28:14,155 INFO L226 Difference]: Without dead ends: 6042 [2021-11-22 20:28:14,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23229 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=6857, Invalid=53905, Unknown=0, NotChecked=0, Total=60762 [2021-11-22 20:28:14,173 INFO L933 BasicCegarLoop]: 1550 mSDtfsCounter, 10134 mSDsluCounter, 29961 mSDsCounter, 0 mSdLazyCounter, 14738 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10134 SdHoareTripleChecker+Valid, 31511 SdHoareTripleChecker+Invalid, 15319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 14738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:14,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10134 Valid, 31511 Invalid, 15319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [581 Valid, 14738 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2021-11-22 20:28:14,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2021-11-22 20:28:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 628. [2021-11-22 20:28:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 614 states have (on average 1.286644951140065) internal successors, (790), 627 states have internal predecessors, (790), 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 20:28:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 790 transitions. [2021-11-22 20:28:14,258 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 790 transitions. Word has length 79 [2021-11-22 20:28:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:14,258 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 790 transitions. [2021-11-22 20:28:14,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.088235294117647) internal successors, (207), 34 states have internal predecessors, (207), 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 20:28:14,259 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 790 transitions. [2021-11-22 20:28:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 20:28:14,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:14,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:14,285 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 20:28:14,479 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,SelfDestructingSolverStorable16 [2021-11-22 20:28:14,480 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:14,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash 378673426, now seen corresponding path program 1 times [2021-11-22 20:28:14,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:14,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303786466] [2021-11-22 20:28:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:14,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:14,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:14,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303786466] [2021-11-22 20:28:14,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303786466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:14,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:14,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:28:14,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001351266] [2021-11-22 20:28:14,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:14,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:28:14,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:14,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:28:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:28:14,660 INFO L87 Difference]: Start difference. First operand 628 states and 790 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:15,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:15,178 INFO L93 Difference]: Finished difference Result 1450 states and 1823 transitions. [2021-11-22 20:28:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 20:28:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 79 [2021-11-22 20:28:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:15,182 INFO L225 Difference]: With dead ends: 1450 [2021-11-22 20:28:15,182 INFO L226 Difference]: Without dead ends: 839 [2021-11-22 20:28:15,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-22 20:28:15,183 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 820 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:15,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 1891 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:28:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-22 20:28:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 624. [2021-11-22 20:28:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 610 states have (on average 1.2721311475409836) internal successors, (776), 623 states have internal predecessors, (776), 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 20:28:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 776 transitions. [2021-11-22 20:28:15,231 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 776 transitions. Word has length 79 [2021-11-22 20:28:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:15,231 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 776 transitions. [2021-11-22 20:28:15,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 776 transitions. [2021-11-22 20:28:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 20:28:15,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:15,232 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:15,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 20:28:15,233 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:15,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2078239348, now seen corresponding path program 1 times [2021-11-22 20:28:15,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:15,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387339088] [2021-11-22 20:28:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:15,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:15,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:15,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387339088] [2021-11-22 20:28:15,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387339088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:15,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:15,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:28:15,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706840606] [2021-11-22 20:28:15,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:15,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:28:15,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:15,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:28:15,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:28:15,536 INFO L87 Difference]: Start difference. First operand 624 states and 776 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:16,086 INFO L93 Difference]: Finished difference Result 1242 states and 1553 transitions. [2021-11-22 20:28:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:28:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 79 [2021-11-22 20:28:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:16,089 INFO L225 Difference]: With dead ends: 1242 [2021-11-22 20:28:16,089 INFO L226 Difference]: Without dead ends: 839 [2021-11-22 20:28:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:28:16,091 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 841 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:16,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1693 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:28:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-22 20:28:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 624. [2021-11-22 20:28:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 610 states have (on average 1.2688524590163934) internal successors, (774), 623 states have internal predecessors, (774), 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 20:28:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 774 transitions. [2021-11-22 20:28:16,140 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 774 transitions. Word has length 79 [2021-11-22 20:28:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:16,140 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 774 transitions. [2021-11-22 20:28:16,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:16,141 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 774 transitions. [2021-11-22 20:28:16,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 20:28:16,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:16,141 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:16,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 20:28:16,142 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:16,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:16,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2076392306, now seen corresponding path program 1 times [2021-11-22 20:28:16,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:16,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573379522] [2021-11-22 20:28:16,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:16,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:16,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:16,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573379522] [2021-11-22 20:28:16,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573379522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:16,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:16,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 20:28:16,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638810429] [2021-11-22 20:28:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:16,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 20:28:16,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:16,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 20:28:16,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:28:16,450 INFO L87 Difference]: Start difference. First operand 624 states and 774 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 20:28:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:17,000 INFO L93 Difference]: Finished difference Result 1244 states and 1553 transitions. [2021-11-22 20:28:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:28:17,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 79 [2021-11-22 20:28:17,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:17,003 INFO L225 Difference]: With dead ends: 1244 [2021-11-22 20:28:17,003 INFO L226 Difference]: Without dead ends: 839 [2021-11-22 20:28:17,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:28:17,004 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 830 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:17,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 2347 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:28:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-11-22 20:28:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 624. [2021-11-22 20:28:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 610 states have (on average 1.2655737704918033) internal successors, (772), 623 states have internal predecessors, (772), 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 20:28:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 772 transitions. [2021-11-22 20:28:17,049 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 772 transitions. Word has length 79 [2021-11-22 20:28:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:17,049 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 772 transitions. [2021-11-22 20:28:17,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 20:28:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 772 transitions. [2021-11-22 20:28:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 20:28:17,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:17,050 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:17,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 20:28:17,051 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:17,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:17,051 INFO L85 PathProgramCache]: Analyzing trace with hash -301384944, now seen corresponding path program 1 times [2021-11-22 20:28:17,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:17,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159013434] [2021-11-22 20:28:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:17,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:17,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:17,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159013434] [2021-11-22 20:28:17,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159013434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:17,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:17,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:28:17,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003803799] [2021-11-22 20:28:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:17,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:28:17,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:28:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:28:17,317 INFO L87 Difference]: Start difference. First operand 624 states and 772 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:17,885 INFO L93 Difference]: Finished difference Result 1242 states and 1549 transitions. [2021-11-22 20:28:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:28:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 79 [2021-11-22 20:28:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:17,888 INFO L225 Difference]: With dead ends: 1242 [2021-11-22 20:28:17,888 INFO L226 Difference]: Without dead ends: 833 [2021-11-22 20:28:17,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:28:17,889 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 813 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:17,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 1880 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:28:17,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2021-11-22 20:28:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 618. [2021-11-22 20:28:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 604 states have (on average 1.2649006622516556) internal successors, (764), 617 states have internal predecessors, (764), 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 20:28:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 764 transitions. [2021-11-22 20:28:17,937 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 764 transitions. Word has length 79 [2021-11-22 20:28:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:17,938 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 764 transitions. [2021-11-22 20:28:17,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 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 20:28:17,938 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 764 transitions. [2021-11-22 20:28:17,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 20:28:17,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:17,939 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:17,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 20:28:17,939 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:17,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:17,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1446027407, now seen corresponding path program 1 times [2021-11-22 20:28:17,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:17,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484783014] [2021-11-22 20:28:17,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:17,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:18,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:18,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484783014] [2021-11-22 20:28:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484783014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:18,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:18,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:28:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558713903] [2021-11-22 20:28:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:18,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:28:18,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:28:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:28:18,062 INFO L87 Difference]: Start difference. First operand 618 states and 764 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 20:28:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:18,427 INFO L93 Difference]: Finished difference Result 1484 states and 1834 transitions. [2021-11-22 20:28:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 20:28:18,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 81 [2021-11-22 20:28:18,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:18,431 INFO L225 Difference]: With dead ends: 1484 [2021-11-22 20:28:18,431 INFO L226 Difference]: Without dead ends: 1079 [2021-11-22 20:28:18,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-22 20:28:18,432 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1187 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:18,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1187 Valid, 1511 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:28:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2021-11-22 20:28:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 618. [2021-11-22 20:28:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 604 states have (on average 1.2549668874172186) internal successors, (758), 617 states have internal predecessors, (758), 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 20:28:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 758 transitions. [2021-11-22 20:28:18,473 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 758 transitions. Word has length 81 [2021-11-22 20:28:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:18,473 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 758 transitions. [2021-11-22 20:28:18,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 20:28:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 758 transitions. [2021-11-22 20:28:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 20:28:18,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:18,474 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:18,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 20:28:18,474 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:18,474 INFO L85 PathProgramCache]: Analyzing trace with hash -178185581, now seen corresponding path program 1 times [2021-11-22 20:28:18,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:18,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902913117] [2021-11-22 20:28:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:18,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 20:28:18,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:18,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902913117] [2021-11-22 20:28:18,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902913117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:18,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:18,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:28:18,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734377856] [2021-11-22 20:28:18,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:28:18,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:28:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:28:18,614 INFO L87 Difference]: Start difference. First operand 618 states and 758 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 20:28:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:19,202 INFO L93 Difference]: Finished difference Result 1843 states and 2249 transitions. [2021-11-22 20:28:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 20:28:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 84 [2021-11-22 20:28:19,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:19,205 INFO L225 Difference]: With dead ends: 1843 [2021-11-22 20:28:19,205 INFO L226 Difference]: Without dead ends: 1436 [2021-11-22 20:28:19,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-22 20:28:19,206 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1832 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:19,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1832 Valid, 2052 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 20:28:19,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-11-22 20:28:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 539. [2021-11-22 20:28:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 525 states have (on average 1.2361904761904763) internal successors, (649), 538 states have internal predecessors, (649), 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 20:28:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 649 transitions. [2021-11-22 20:28:19,248 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 649 transitions. Word has length 84 [2021-11-22 20:28:19,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:19,249 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 649 transitions. [2021-11-22 20:28:19,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 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 20:28:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 649 transitions. [2021-11-22 20:28:19,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 20:28:19,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:19,249 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:19,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 20:28:19,250 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1487330666, now seen corresponding path program 1 times [2021-11-22 20:28:19,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:19,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439294485] [2021-11-22 20:28:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:19,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-22 20:28:19,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:19,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439294485] [2021-11-22 20:28:19,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439294485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:19,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:19,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:28:19,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212120403] [2021-11-22 20:28:19,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:19,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:28:19,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:28:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:28:19,331 INFO L87 Difference]: Start difference. First operand 539 states and 649 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 20:28:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:19,476 INFO L93 Difference]: Finished difference Result 1245 states and 1492 transitions. [2021-11-22 20:28:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:28:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 87 [2021-11-22 20:28:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:19,479 INFO L225 Difference]: With dead ends: 1245 [2021-11-22 20:28:19,479 INFO L226 Difference]: Without dead ends: 774 [2021-11-22 20:28:19,480 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 20:28:19,481 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 251 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:19,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 1014 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:28:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-11-22 20:28:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 539. [2021-11-22 20:28:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 525 states have (on average 1.2057142857142857) internal successors, (633), 538 states have internal predecessors, (633), 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 20:28:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 633 transitions. [2021-11-22 20:28:19,523 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 633 transitions. Word has length 87 [2021-11-22 20:28:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:19,523 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 633 transitions. [2021-11-22 20:28:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 20:28:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 633 transitions. [2021-11-22 20:28:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-22 20:28:19,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:19,524 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:19,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 20:28:19,525 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1464698412, now seen corresponding path program 1 times [2021-11-22 20:28:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023261692] [2021-11-22 20:28:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:19,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 20:28:19,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023261692] [2021-11-22 20:28:19,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023261692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:19,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:28:19,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:28:19,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244278188] [2021-11-22 20:28:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:19,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:28:19,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:28:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:28:19,635 INFO L87 Difference]: Start difference. First operand 539 states and 633 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 20:28:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:19,916 INFO L93 Difference]: Finished difference Result 1362 states and 1586 transitions. [2021-11-22 20:28:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:28:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 87 [2021-11-22 20:28:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:19,919 INFO L225 Difference]: With dead ends: 1362 [2021-11-22 20:28:19,919 INFO L226 Difference]: Without dead ends: 911 [2021-11-22 20:28:19,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:28:19,921 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 547 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:19,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 1823 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:28:19,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-11-22 20:28:19,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 527. [2021-11-22 20:28:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 513 states have (on average 1.2046783625730995) internal successors, (618), 526 states have internal predecessors, (618), 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 20:28:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 618 transitions. [2021-11-22 20:28:19,960 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 618 transitions. Word has length 87 [2021-11-22 20:28:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:19,960 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 618 transitions. [2021-11-22 20:28:19,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 20:28:19,961 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 618 transitions. [2021-11-22 20:28:19,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 20:28:19,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:19,961 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:19,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 20:28:19,962 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash -791753618, now seen corresponding path program 1 times [2021-11-22 20:28:19,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:19,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459457459] [2021-11-22 20:28:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:19,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:28:20,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459457459] [2021-11-22 20:28:20,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459457459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:28:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870924169] [2021-11-22 20:28:20,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:20,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:28:20,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:28:20,312 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 20:28:20,313 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 20:28:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:20,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 20:28:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:28:21,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-22 20:28:21,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2021-11-22 20:28:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-22 20:28:21,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:28:21,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870924169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:28:21,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:28:21,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-22 20:28:21,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34299848] [2021-11-22 20:28:21,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:28:21,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:28:21,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:28:21,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:28:21,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-22 20:28:21,224 INFO L87 Difference]: Start difference. First operand 527 states and 618 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 20:28:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:28:21,623 INFO L93 Difference]: Finished difference Result 910 states and 1073 transitions. [2021-11-22 20:28:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 20:28:21,623 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 88 [2021-11-22 20:28:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:28:21,625 INFO L225 Difference]: With dead ends: 910 [2021-11-22 20:28:21,625 INFO L226 Difference]: Without dead ends: 712 [2021-11-22 20:28:21,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-11-22 20:28:21,627 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 787 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:28:21,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 1418 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 20:28:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-22 20:28:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 527. [2021-11-22 20:28:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 513 states have (on average 1.202729044834308) internal successors, (617), 526 states have internal predecessors, (617), 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 20:28:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 617 transitions. [2021-11-22 20:28:21,675 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 617 transitions. Word has length 88 [2021-11-22 20:28:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:28:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 617 transitions. [2021-11-22 20:28:21,676 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 20:28:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 617 transitions. [2021-11-22 20:28:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-22 20:28:21,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:28:21,677 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:28:21,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 20:28:21,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:28:21,892 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 11 more)] === [2021-11-22 20:28:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:28:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash -789906576, now seen corresponding path program 1 times [2021-11-22 20:28:21,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:28:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244976402] [2021-11-22 20:28:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:21,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:28:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:28:22,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:28:22,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244976402] [2021-11-22 20:28:22,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244976402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:28:22,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540133129] [2021-11-22 20:28:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:28:22,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:28:22,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:28:22,289 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 20:28:22,290 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 20:28:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:28:22,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-22 20:28:22,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:28:23,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-11-22 20:28:23,074 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 14 treesize of output 13 [2021-11-22 20:28:23,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2021-11-22 20:28:23,084 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 14 treesize of output 13 [2021-11-22 20:28:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:28:24,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:28:26,228 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_aws_linked_list_empty_~list#1.base| Int) (|ULTIMATE.start_aws_linked_list_empty_~list#1.offset| Int)) (= (select (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_aws_linked_list_empty_~list#1.base|) |ULTIMATE.start_aws_linked_list_empty_~list#1.offset|) (+ |ULTIMATE.start_aws_linked_list_empty_~list#1.offset| 16))) (forall ((|ULTIMATE.start_aws_linked_list_empty_~list#1.base| Int) (|ULTIMATE.start_aws_linked_list_empty_~list#1.offset| Int)) (= (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_linked_list_empty_~list#1.base|) |ULTIMATE.start_aws_linked_list_empty_~list#1.offset|) |ULTIMATE.start_aws_linked_list_empty_~list#1.base|))) is different from false [2021-11-22 20:28:36,358 WARN L227 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:28:46,458 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:28:56,536 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:29:06,630 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 20:29:07,946 INFO L354 Elim1Store]: treesize reduction 91, result has 88.9 percent of original size [2021-11-22 20:29:07,947 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 9 new quantified variables, introduced 21 case distinctions, treesize of input 33291 treesize of output 29097 [2021-11-22 20:29:59,337 WARN L227 SmtUtils]: Spent 49.99s on a formula simplification. DAG size of input: 2332 DAG size of output: 2228 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:29:59,342 INFO L354 Elim1Store]: treesize reduction 265, result has 96.3 percent of original size [2021-11-22 20:29:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 34 select indices, 34 select index equivalence classes, 0 disjoint index pairs (out of 561 index pairs), introduced 56 new quantified variables, introduced 561 case distinctions, treesize of input 2379092 treesize of output 2104463 [2021-11-22 20:30:19,349 WARN L227 SmtUtils]: Spent 19.98s on a formula simplification that was a NOOP. DAG size: 11298 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:30:37,962 WARN L227 SmtUtils]: Spent 18.40s on a formula simplification that was a NOOP. DAG size: 11138 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:30:59,281 WARN L227 SmtUtils]: Spent 20.75s on a formula simplification that was a NOOP. DAG size: 741 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:30:59,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:30:59,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 27 new quantified variables, introduced 171 case distinctions, treesize of input 2109312 treesize of output 2037400 [2021-11-22 20:31:23,155 WARN L227 SmtUtils]: Spent 23.85s on a formula simplification that was a NOOP. DAG size: 11837 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:31:46,852 WARN L227 SmtUtils]: Spent 23.57s on a formula simplification that was a NOOP. DAG size: 11814 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:32:09,605 WARN L227 SmtUtils]: Spent 22.34s on a formula simplification that was a NOOP. DAG size: 744 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:32:09,605 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:32:09,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 2026814 treesize of output 1821380 [2021-11-22 20:32:39,457 WARN L227 SmtUtils]: Spent 29.83s on a formula simplification that was a NOOP. DAG size: 12288 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:33:01,168 WARN L227 SmtUtils]: Spent 19.78s on a formula simplification that was a NOOP. DAG size: 744 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:33:01,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 20:33:01,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 2873829 treesize of output 2577767 [2021-11-22 20:36:10,846 WARN L227 SmtUtils]: Spent 3.16m on a formula simplification. DAG size of input: 13836 DAG size of output: 13812 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:37:03,291 WARN L227 SmtUtils]: Spent 51.41s on a formula simplification. DAG size of input: 585 DAG size of output: 581 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 20:37:03,293 INFO L354 Elim1Store]: treesize reduction 34, result has 97.5 percent of original size [2021-11-22 20:37:03,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 17 select indices, 17 select index equivalence classes, 0 disjoint index pairs (out of 136 index pairs), introduced 23 new quantified variables, introduced 136 case distinctions, treesize of input 2875182 treesize of output 2792994 [2021-11-22 20:40:00,585 WARN L227 SmtUtils]: Spent 2.95m on a formula simplification. DAG size of input: 16283 DAG size of output: 16269 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:40:59,353 WARN L227 SmtUtils]: Spent 58.65s on a formula simplification that was a NOOP. DAG size: 16177 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 20:41:30,344 WARN L227 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 7195 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15