./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_pop_front_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 edd3fac09d24fc037292743bb080afb788cb886b05d29648be5f73c1396cfbb6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 23:23:25,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 23:23:25,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 23:23:25,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 23:23:25,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 23:23:25,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 23:23:25,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 23:23:25,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 23:23:25,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 23:23:25,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 23:23:25,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 23:23:25,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 23:23:25,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 23:23:25,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 23:23:25,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 23:23:25,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 23:23:25,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 23:23:25,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 23:23:25,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 23:23:25,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 23:23:25,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 23:23:25,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 23:23:25,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 23:23:25,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 23:23:25,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 23:23:25,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 23:23:25,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 23:23:25,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 23:23:25,321 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 23:23:25,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 23:23:25,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 23:23:25,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 23:23:25,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 23:23:25,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 23:23:25,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 23:23:25,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 23:23:25,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 23:23:25,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 23:23:25,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 23:23:25,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 23:23:25,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 23:23:25,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 23:23:25,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 23:23:25,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 23:23:25,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 23:23:25,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 23:23:25,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 23:23:25,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 23:23:25,364 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 23:23:25,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 23:23:25,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 23:23:25,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 23:23:25,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 23:23:25,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 23:23:25,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 23:23:25,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 23:23:25,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 23:23:25,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 23:23:25,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 23:23:25,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 23:23:25,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 23:23:25,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:23:25,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 23:23:25,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 23:23:25,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 23:23:25,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 23:23:25,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 23:23:25,368 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 23:23:25,368 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 23:23:25,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 23:23:25,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 23:23:25,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edd3fac09d24fc037292743bb080afb788cb886b05d29648be5f73c1396cfbb6 [2021-11-03 23:23:25,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 23:23:25,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 23:23:25,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 23:23:25,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 23:23:25,596 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 23:23:25,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2021-11-03 23:23:25,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ed354f/c490bc733daa4973a9ef00f6f80b042e/FLAG601abe2f6 [2021-11-03 23:23:26,248 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 23:23:26,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_pop_front_harness.i [2021-11-03 23:23:26,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ed354f/c490bc733daa4973a9ef00f6f80b042e/FLAG601abe2f6 [2021-11-03 23:23:26,627 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1ed354f/c490bc733daa4973a9ef00f6f80b042e [2021-11-03 23:23:26,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 23:23:26,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 23:23:26,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 23:23:26,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 23:23:26,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 23:23:26,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:23:26" (1/1) ... [2021-11-03 23:23:26,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b9e315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:26, skipping insertion in model container [2021-11-03 23:23:26,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 11:23:26" (1/1) ... [2021-11-03 23:23:26,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 23:23:26,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 23:23:26,933 WARN L228 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_pop_front_harness.i[4499,4512] [2021-11-03 23:23:26,938 WARN L228 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_pop_front_harness.i[4559,4572] [2021-11-03 23:23:26,952 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:23:26,956 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:23:27,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,517 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:27,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:23:27,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:23:27,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:23:27,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:23:27,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:23:27,725 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:23:27,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:23:27,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:23:27,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:23:27,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:23:27,847 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:23:27,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:23:27,924 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 23:23:27,946 WARN L228 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_pop_front_harness.i[4499,4512] [2021-11-03 23:23:27,946 WARN L228 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_pop_front_harness.i[4559,4572] [2021-11-03 23:23:27,961 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 23:23:27,962 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 23:23:28,004 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,005 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,005 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,006 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,017 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,018 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,019 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 23:23:28,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 23:23:28,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 23:23:28,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 23:23:28,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 23:23:28,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 23:23:28,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 23:23:28,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 23:23:28,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 23:23:28,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 23:23:28,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 23:23:28,086 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 23:23:28,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 23:23:28,257 INFO L208 MainTranslator]: Completed translation [2021-11-03 23:23:28,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28 WrapperNode [2021-11-03 23:23:28,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 23:23:28,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 23:23:28,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 23:23:28,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 23:23:28,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 23:23:28,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 23:23:28,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 23:23:28,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 23:23:28,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 23:23:28,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 23:23:28,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 23:23:28,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 23:23:28,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (1/1) ... [2021-11-03 23:23:28,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 23:23:28,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:23:28,545 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) [2021-11-03 23:23:28,571 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 [2021-11-03 23:23:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 23:23:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 23:23:28,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 23:23:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 23:23:28,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 23:23:28,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 23:23:28,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 23:23:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 23:23:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 23:23:28,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 23:23:29,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 23:23:29,081 INFO L299 CfgBuilder]: Removed 119 assume(true) statements. [2021-11-03 23:23:29,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:23:29 BoogieIcfgContainer [2021-11-03 23:23:29,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 23:23:29,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 23:23:29,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 23:23:29,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 23:23:29,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 11:23:26" (1/3) ... [2021-11-03 23:23:29,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d392c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:23:29, skipping insertion in model container [2021-11-03 23:23:29,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 11:23:28" (2/3) ... [2021-11-03 23:23:29,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d392c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 11:23:29, skipping insertion in model container [2021-11-03 23:23:29,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 11:23:29" (3/3) ... [2021-11-03 23:23:29,094 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_pop_front_harness.i [2021-11-03 23:23:29,102 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 23:23:29,102 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 23:23:29,143 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 23:23:29,149 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 [2021-11-03 23:23:29,149 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 23:23:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 206 states have (on average 1.5388349514563107) internal successors, (317), 216 states have internal predecessors, (317), 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) [2021-11-03 23:23:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:29,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:29,191 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] [2021-11-03 23:23:29,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:29,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash 170416363, now seen corresponding path program 1 times [2021-11-03 23:23:29,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:29,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439545696] [2021-11-03 23:23:29,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:29,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:29,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:29,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439545696] [2021-11-03 23:23:29,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439545696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:29,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:29,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 23:23:29,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276998095] [2021-11-03 23:23:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:29,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 23:23:29,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 23:23:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:23:29,576 INFO L87 Difference]: Start difference. First operand has 217 states, 206 states have (on average 1.5388349514563107) internal successors, (317), 216 states have internal predecessors, (317), 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 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2021-11-03 23:23:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:29,894 INFO L93 Difference]: Finished difference Result 430 states and 629 transitions. [2021-11-03 23:23:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 23:23:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:29,904 INFO L225 Difference]: With dead ends: 430 [2021-11-03 23:23:29,904 INFO L226 Difference]: Without dead ends: 212 [2021-11-03 23:23:29,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 23:23:29,910 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 275.40ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:29,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 286 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 275.40ms Time] [2021-11-03 23:23:29,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-03 23:23:29,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-03 23:23:29,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 202 states have (on average 1.391089108910891) internal successors, (281), 211 states have internal predecessors, (281), 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) [2021-11-03 23:23:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 281 transitions. [2021-11-03 23:23:29,990 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 281 transitions. Word has length 56 [2021-11-03 23:23:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:29,991 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 281 transitions. [2021-11-03 23:23:29,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2021-11-03 23:23:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 281 transitions. [2021-11-03 23:23:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:29,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:29,993 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] [2021-11-03 23:23:29,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 23:23:29,993 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:29,994 INFO L85 PathProgramCache]: Analyzing trace with hash 828944299, now seen corresponding path program 1 times [2021-11-03 23:23:29,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:29,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226988929] [2021-11-03 23:23:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:29,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:30,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:30,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226988929] [2021-11-03 23:23:30,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226988929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:30,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:30,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:23:30,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144816285] [2021-11-03 23:23:30,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:30,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:23:30,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:30,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:23:30,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:23:30,117 INFO L87 Difference]: Start difference. First operand 212 states and 281 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:30,766 INFO L93 Difference]: Finished difference Result 462 states and 632 transitions. [2021-11-03 23:23:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:23:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:30,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:30,770 INFO L225 Difference]: With dead ends: 462 [2021-11-03 23:23:30,770 INFO L226 Difference]: Without dead ends: 272 [2021-11-03 23:23:30,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:30,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 423.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 570.23ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:30,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 958 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [17 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 570.23ms Time] [2021-11-03 23:23:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-03 23:23:30,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 222. [2021-11-03 23:23:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 212 states have (on average 1.3726415094339623) internal successors, (291), 221 states have internal predecessors, (291), 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) [2021-11-03 23:23:30,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 291 transitions. [2021-11-03 23:23:30,788 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 291 transitions. Word has length 56 [2021-11-03 23:23:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:30,789 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 291 transitions. [2021-11-03 23:23:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:30,789 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 291 transitions. [2021-11-03 23:23:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:30,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:30,791 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] [2021-11-03 23:23:30,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 23:23:30,791 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:30,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash 434577513, now seen corresponding path program 1 times [2021-11-03 23:23:30,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:30,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625760933] [2021-11-03 23:23:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:30,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:30,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:30,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625760933] [2021-11-03 23:23:30,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625760933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:30,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:30,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:23:30,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729471067] [2021-11-03 23:23:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:30,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:23:30,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:23:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:23:30,868 INFO L87 Difference]: Start difference. First operand 222 states and 291 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:31,388 INFO L93 Difference]: Finished difference Result 458 states and 617 transitions. [2021-11-03 23:23:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:23:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:31,391 INFO L225 Difference]: With dead ends: 458 [2021-11-03 23:23:31,391 INFO L226 Difference]: Without dead ends: 262 [2021-11-03 23:23:31,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:31,392 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 392.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 495.17ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:31,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 925 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [17 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 495.17ms Time] [2021-11-03 23:23:31,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-03 23:23:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 232. [2021-11-03 23:23:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 222 states have (on average 1.3558558558558558) internal successors, (301), 231 states have internal predecessors, (301), 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) [2021-11-03 23:23:31,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 301 transitions. [2021-11-03 23:23:31,421 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 301 transitions. Word has length 56 [2021-11-03 23:23:31,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:31,421 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 301 transitions. [2021-11-03 23:23:31,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 301 transitions. [2021-11-03 23:23:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:31,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:31,425 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] [2021-11-03 23:23:31,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 23:23:31,426 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:31,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:31,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1809405785, now seen corresponding path program 1 times [2021-11-03 23:23:31,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:31,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129369333] [2021-11-03 23:23:31,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:31,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:31,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:31,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129369333] [2021-11-03 23:23:31,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129369333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:31,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:31,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:23:31,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260704420] [2021-11-03 23:23:31,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:31,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:23:31,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:23:31,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:23:31,553 INFO L87 Difference]: Start difference. First operand 232 states and 301 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:31,999 INFO L93 Difference]: Finished difference Result 454 states and 602 transitions. [2021-11-03 23:23:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:23:32,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:32,001 INFO L225 Difference]: With dead ends: 454 [2021-11-03 23:23:32,001 INFO L226 Difference]: Without dead ends: 252 [2021-11-03 23:23:32,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:32,003 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 424.49ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:32,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 881 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [24 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 424.49ms Time] [2021-11-03 23:23:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-03 23:23:32,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2021-11-03 23:23:32,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 237 states have (on average 1.3333333333333333) internal successors, (316), 246 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 316 transitions. [2021-11-03 23:23:32,012 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 316 transitions. Word has length 56 [2021-11-03 23:23:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:32,013 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 316 transitions. [2021-11-03 23:23:32,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:32,013 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 316 transitions. [2021-11-03 23:23:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:32,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:32,015 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] [2021-11-03 23:23:32,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 23:23:32,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1534646171, now seen corresponding path program 1 times [2021-11-03 23:23:32,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:32,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123982709] [2021-11-03 23:23:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:32,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:32,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:32,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123982709] [2021-11-03 23:23:32,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123982709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:32,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:32,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:23:32,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120661982] [2021-11-03 23:23:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:32,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:23:32,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:32,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:23:32,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:32,135 INFO L87 Difference]: Start difference. First operand 247 states and 316 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-11-03 23:23:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:32,524 INFO L93 Difference]: Finished difference Result 448 states and 574 transitions. [2021-11-03 23:23:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:23:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:32,526 INFO L225 Difference]: With dead ends: 448 [2021-11-03 23:23:32,526 INFO L226 Difference]: Without dead ends: 239 [2021-11-03 23:23:32,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.48ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:23:32,528 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 515 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 276.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 351.38ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:32,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 0 Invalid, 579 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [14 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 351.38ms Time] [2021-11-03 23:23:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-03 23:23:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-03 23:23:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 229 states have (on average 1.3275109170305677) internal successors, (304), 238 states have internal predecessors, (304), 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) [2021-11-03 23:23:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 304 transitions. [2021-11-03 23:23:32,537 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 304 transitions. Word has length 56 [2021-11-03 23:23:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:32,537 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 304 transitions. [2021-11-03 23:23:32,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-11-03 23:23:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 304 transitions. [2021-11-03 23:23:32,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 23:23:32,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:32,538 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] [2021-11-03 23:23:32,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 23:23:32,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:32,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:32,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1858303597, now seen corresponding path program 1 times [2021-11-03 23:23:32,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:32,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854086159] [2021-11-03 23:23:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:32,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:32,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:32,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854086159] [2021-11-03 23:23:32,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854086159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:32,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:32,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:23:32,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822719962] [2021-11-03 23:23:32,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:32,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:23:32,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:32,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:23:32,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:23:32,631 INFO L87 Difference]: Start difference. First operand 239 states and 304 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:33,171 INFO L93 Difference]: Finished difference Result 524 states and 656 transitions. [2021-11-03 23:23:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:23:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2021-11-03 23:23:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:33,173 INFO L225 Difference]: With dead ends: 524 [2021-11-03 23:23:33,173 INFO L226 Difference]: Without dead ends: 316 [2021-11-03 23:23:33,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:33,175 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 417.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 510.10ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:33,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 832 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [6 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 510.10ms Time] [2021-11-03 23:23:33,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-03 23:23:33,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 229. [2021-11-03 23:23:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 219 states have (on average 1.3059360730593608) internal successors, (286), 228 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 286 transitions. [2021-11-03 23:23:33,183 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 286 transitions. Word has length 56 [2021-11-03 23:23:33,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:33,184 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 286 transitions. [2021-11-03 23:23:33,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-11-03 23:23:33,184 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 286 transitions. [2021-11-03 23:23:33,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 23:23:33,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:33,185 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] [2021-11-03 23:23:33,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 23:23:33,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1990287981, now seen corresponding path program 1 times [2021-11-03 23:23:33,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:33,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953832350] [2021-11-03 23:23:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:33,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:33,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:33,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953832350] [2021-11-03 23:23:33,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953832350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:33,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:33,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:23:33,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909015492] [2021-11-03 23:23:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:33,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:23:33,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:33,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:23:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:23:33,300 INFO L87 Difference]: Start difference. First operand 229 states and 286 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) [2021-11-03 23:23:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:33,772 INFO L93 Difference]: Finished difference Result 534 states and 662 transitions. [2021-11-03 23:23:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:23:33,773 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 [2021-11-03 23:23:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:33,775 INFO L225 Difference]: With dead ends: 534 [2021-11-03 23:23:33,775 INFO L226 Difference]: Without dead ends: 342 [2021-11-03 23:23:33,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.76ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:23:33,776 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1114 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 335.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.33ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 419.56ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:33,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 0 Invalid, 606 Unknown, 0 Unchecked, 4.33ms Time], IncrementalHoareTripleChecker [30 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 419.56ms Time] [2021-11-03 23:23:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-03 23:23:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 229. [2021-11-03 23:23:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 219 states have (on average 1.2876712328767124) internal successors, (282), 228 states have internal predecessors, (282), 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) [2021-11-03 23:23:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 282 transitions. [2021-11-03 23:23:33,788 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 282 transitions. Word has length 60 [2021-11-03 23:23:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 282 transitions. [2021-11-03 23:23:33,794 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) [2021-11-03 23:23:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 282 transitions. [2021-11-03 23:23:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 23:23:33,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:33,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:23:33,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 23:23:33,796 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:33,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 49668941, now seen corresponding path program 1 times [2021-11-03 23:23:33,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:33,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622246672] [2021-11-03 23:23:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:33,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:33,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:33,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622246672] [2021-11-03 23:23:33,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622246672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:33,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:33,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:23:33,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483217212] [2021-11-03 23:23:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:33,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:23:33,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:23:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:23:33,902 INFO L87 Difference]: Start difference. First operand 229 states and 282 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:34,657 INFO L93 Difference]: Finished difference Result 722 states and 889 transitions. [2021-11-03 23:23:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:23:34,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-03 23:23:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:34,659 INFO L225 Difference]: With dead ends: 722 [2021-11-03 23:23:34,660 INFO L226 Difference]: Without dead ends: 529 [2021-11-03 23:23:34,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 54.80ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:23:34,661 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1750 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 538.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 671.14ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:34,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 0 Invalid, 1019 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [64 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 671.14ms Time] [2021-11-03 23:23:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-03 23:23:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 233. [2021-11-03 23:23:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 223 states have (on average 1.2825112107623318) internal successors, (286), 232 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 286 transitions. [2021-11-03 23:23:34,670 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 286 transitions. Word has length 64 [2021-11-03 23:23:34,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:34,672 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 286 transitions. [2021-11-03 23:23:34,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 286 transitions. [2021-11-03 23:23:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 23:23:34,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:34,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:23:34,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 23:23:34,675 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:34,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1788737394, now seen corresponding path program 1 times [2021-11-03 23:23:34,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:34,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140740417] [2021-11-03 23:23:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:34,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:34,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:34,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140740417] [2021-11-03 23:23:34,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140740417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:34,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:34,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:23:34,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552162413] [2021-11-03 23:23:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:34,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:23:34,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:23:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:23:34,817 INFO L87 Difference]: Start difference. First operand 233 states and 286 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-03 23:23:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:35,567 INFO L93 Difference]: Finished difference Result 726 states and 889 transitions. [2021-11-03 23:23:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:23:35,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2021-11-03 23:23:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:35,570 INFO L225 Difference]: With dead ends: 726 [2021-11-03 23:23:35,570 INFO L226 Difference]: Without dead ends: 530 [2021-11-03 23:23:35,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 70.85ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-03 23:23:35,571 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2015 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 519.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.88ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 647.92ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:35,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 0 Invalid, 909 Unknown, 0 Unchecked, 5.88ms Time], IncrementalHoareTripleChecker [77 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 647.92ms Time] [2021-11-03 23:23:35,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-03 23:23:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 237. [2021-11-03 23:23:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 227 states have (on average 1.277533039647577) internal successors, (290), 236 states have internal predecessors, (290), 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) [2021-11-03 23:23:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2021-11-03 23:23:35,582 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 66 [2021-11-03 23:23:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:35,582 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2021-11-03 23:23:35,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-03 23:23:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2021-11-03 23:23:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 23:23:35,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:35,584 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] [2021-11-03 23:23:35,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 23:23:35,584 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:35,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:35,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1529718097, now seen corresponding path program 1 times [2021-11-03 23:23:35,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:35,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246862196] [2021-11-03 23:23:35,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:35,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:35,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:35,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246862196] [2021-11-03 23:23:35,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246862196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:35,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:35,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 23:23:35,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583951749] [2021-11-03 23:23:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:35,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 23:23:35,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 23:23:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 23:23:35,681 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-03 23:23:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:36,565 INFO L93 Difference]: Finished difference Result 736 states and 900 transitions. [2021-11-03 23:23:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 23:23:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 76 [2021-11-03 23:23:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:36,568 INFO L225 Difference]: With dead ends: 736 [2021-11-03 23:23:36,568 INFO L226 Difference]: Without dead ends: 529 [2021-11-03 23:23:36,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 83.15ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-03 23:23:36,569 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1673 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 633.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.05ms SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 777.63ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:36,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 0 Invalid, 1315 Unknown, 0 Unchecked, 5.05ms Time], IncrementalHoareTripleChecker [87 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 777.63ms Time] [2021-11-03 23:23:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-03 23:23:36,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 241. [2021-11-03 23:23:36,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2727272727272727) internal successors, (294), 240 states have internal predecessors, (294), 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) [2021-11-03 23:23:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 294 transitions. [2021-11-03 23:23:36,587 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 294 transitions. Word has length 76 [2021-11-03 23:23:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:36,587 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 294 transitions. [2021-11-03 23:23:36,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-03 23:23:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 294 transitions. [2021-11-03 23:23:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 23:23:36,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:36,588 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] [2021-11-03 23:23:36,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 23:23:36,589 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1176629715, now seen corresponding path program 1 times [2021-11-03 23:23:36,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:36,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577210507] [2021-11-03 23:23:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:36,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:23:36,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:36,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577210507] [2021-11-03 23:23:36,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577210507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:36,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:23:36,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 23:23:36,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323664470] [2021-11-03 23:23:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:36,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 23:23:36,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:36,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 23:23:36,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:23:36,678 INFO L87 Difference]: Start difference. First operand 241 states and 294 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-03 23:23:37,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:37,410 INFO L93 Difference]: Finished difference Result 648 states and 782 transitions. [2021-11-03 23:23:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 23:23:37,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-03 23:23:37,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:37,413 INFO L225 Difference]: With dead ends: 648 [2021-11-03 23:23:37,413 INFO L226 Difference]: Without dead ends: 444 [2021-11-03 23:23:37,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.50ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:23:37,414 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 229 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 552.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.80ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 683.09ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:37,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 0 Invalid, 1339 Unknown, 0 Unchecked, 2.80ms Time], IncrementalHoareTripleChecker [14 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 683.09ms Time] [2021-11-03 23:23:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-03 23:23:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 241. [2021-11-03 23:23:37,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2640692640692641) internal successors, (292), 240 states have internal predecessors, (292), 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) [2021-11-03 23:23:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 292 transitions. [2021-11-03 23:23:37,426 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 292 transitions. Word has length 76 [2021-11-03 23:23:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:37,427 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 292 transitions. [2021-11-03 23:23:37,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-03 23:23:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 292 transitions. [2021-11-03 23:23:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 23:23:37,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:37,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:23:37,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 23:23:37,429 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:37,430 INFO L85 PathProgramCache]: Analyzing trace with hash 660004237, now seen corresponding path program 1 times [2021-11-03 23:23:37,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:37,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063183086] [2021-11-03 23:23:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:37,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:23:37,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:37,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063183086] [2021-11-03 23:23:37,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063183086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:23:37,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999245773] [2021-11-03 23:23:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:37,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:23:37,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:23:37,607 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) [2021-11-03 23:23:37,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 23:23:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:37,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-03 23:23:37,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:23:37,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:23:38,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 23:23:38,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-03 23:23:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:23:38,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:23:39,016 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 178 treesize of output 170 [2021-11-03 23:23:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 23:23:39,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999245773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:23:39,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:23:39,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2021-11-03 23:23:39,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802750820] [2021-11-03 23:23:39,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:23:39,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-03 23:23:39,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-03 23:23:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2021-11-03 23:23:39,229 INFO L87 Difference]: Start difference. First operand 241 states and 292 transitions. Second operand has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 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) [2021-11-03 23:23:45,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:45,797 INFO L93 Difference]: Finished difference Result 2109 states and 2484 transitions. [2021-11-03 23:23:45,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-03 23:23:45,798 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-03 23:23:45,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:45,803 INFO L225 Difference]: With dead ends: 2109 [2021-11-03 23:23:45,805 INFO L226 Difference]: Without dead ends: 1907 [2021-11-03 23:23:45,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4123 ImplicationChecksByTransitivity, 3031.89ms TimeCoverageRelationStatistics Valid=2545, Invalid=9445, Unknown=0, NotChecked=0, Total=11990 [2021-11-03 23:23:45,810 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8166 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 5595 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2968.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8166 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.12ms SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 5595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3557.84ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:45,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8166 Valid, 0 Invalid, 6113 Unknown, 0 Unchecked, 31.12ms Time], IncrementalHoareTripleChecker [518 Valid, 5595 Invalid, 0 Unknown, 0 Unchecked, 3557.84ms Time] [2021-11-03 23:23:45,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2021-11-03 23:23:45,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 365. [2021-11-03 23:23:45,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 355 states have (on average 1.2450704225352112) internal successors, (442), 364 states have internal predecessors, (442), 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) [2021-11-03 23:23:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 442 transitions. [2021-11-03 23:23:45,840 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 442 transitions. Word has length 80 [2021-11-03 23:23:45,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:45,840 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 442 transitions. [2021-11-03 23:23:45,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.615384615384615) internal successors, (198), 26 states have internal predecessors, (198), 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) [2021-11-03 23:23:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 442 transitions. [2021-11-03 23:23:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:23:45,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:45,842 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] [2021-11-03 23:23:45,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 23:23:46,067 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,SelfDestructingSolverStorable11 [2021-11-03 23:23:46,068 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2023690006, now seen corresponding path program 1 times [2021-11-03 23:23:46,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:46,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502619719] [2021-11-03 23:23:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:46,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:23:46,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:46,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502619719] [2021-11-03 23:23:46,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502619719] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:23:46,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317521880] [2021-11-03 23:23:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:46,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:23:46,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:23:46,523 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) [2021-11-03 23:23:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 23:23:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:46,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-03 23:23:46,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:23:46,752 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 23:23:46,752 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 63 treesize of output 58 [2021-11-03 23:23:46,764 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-03 23:23:46,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 54 [2021-11-03 23:23:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 23:23:50,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:23:50,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317521880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:50,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:23:50,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-11-03 23:23:50,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423370777] [2021-11-03 23:23:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:50,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 23:23:50,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 23:23:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-03 23:23:50,966 INFO L87 Difference]: Start difference. First operand 365 states and 442 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:51,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:51,321 INFO L93 Difference]: Finished difference Result 640 states and 780 transitions. [2021-11-03 23:23:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:23:51,321 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 23:23:51,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:51,323 INFO L225 Difference]: With dead ends: 640 [2021-11-03 23:23:51,323 INFO L226 Difference]: Without dead ends: 487 [2021-11-03 23:23:51,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1682.58ms TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-03 23:23:51,326 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1200 IncrementalHoareTripleChecker+Unchecked, 281.11ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:51,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 1747 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 1200 Unchecked, 281.11ms Time] [2021-11-03 23:23:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-03 23:23:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2021-11-03 23:23:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 477 states have (on average 1.2368972746331237) internal successors, (590), 486 states have internal predecessors, (590), 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) [2021-11-03 23:23:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 590 transitions. [2021-11-03 23:23:51,355 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 590 transitions. Word has length 82 [2021-11-03 23:23:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:51,355 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 590 transitions. [2021-11-03 23:23:51,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 590 transitions. [2021-11-03 23:23:51,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:23:51,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:51,357 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] [2021-11-03 23:23:51,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 23:23:51,579 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,SelfDestructingSolverStorable12 [2021-11-03 23:23:51,580 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2021842964, now seen corresponding path program 1 times [2021-11-03 23:23:51,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:51,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567011775] [2021-11-03 23:23:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:51,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:23:52,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:52,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567011775] [2021-11-03 23:23:52,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567011775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:23:52,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205168741] [2021-11-03 23:23:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:52,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:23:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:23:52,011 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) [2021-11-03 23:23:52,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 23:23:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-03 23:23:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:23:52,294 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-03 23:23:52,295 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 16 treesize of output 17 [2021-11-03 23:23:53,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-03 23:23:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 23:23:53,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:23:53,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205168741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:53,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:23:53,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 25 [2021-11-03 23:23:53,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004645724] [2021-11-03 23:23:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:53,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 23:23:53,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 23:23:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:23:53,058 INFO L87 Difference]: Start difference. First operand 487 states and 590 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:54,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:54,791 INFO L93 Difference]: Finished difference Result 818 states and 999 transitions. [2021-11-03 23:23:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:23:54,791 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 23:23:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:54,794 INFO L225 Difference]: With dead ends: 818 [2021-11-03 23:23:54,794 INFO L226 Difference]: Without dead ends: 664 [2021-11-03 23:23:54,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 765.80ms TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 23:23:54,795 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1570 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 977.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.39ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1202.95ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:54,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 0 Invalid, 2181 Unknown, 0 Unchecked, 7.39ms Time], IncrementalHoareTripleChecker [60 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 1202.95ms Time] [2021-11-03 23:23:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-03 23:23:54,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 487. [2021-11-03 23:23:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 477 states have (on average 1.2327044025157232) internal successors, (588), 486 states have internal predecessors, (588), 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) [2021-11-03 23:23:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 588 transitions. [2021-11-03 23:23:54,824 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 588 transitions. Word has length 82 [2021-11-03 23:23:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:54,825 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 588 transitions. [2021-11-03 23:23:54,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 588 transitions. [2021-11-03 23:23:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:23:54,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:54,828 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] [2021-11-03 23:23:54,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 23:23:55,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:23:55,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:23:55,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:23:55,055 INFO L85 PathProgramCache]: Analyzing trace with hash -246835602, now seen corresponding path program 1 times [2021-11-03 23:23:55,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:23:55,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604961813] [2021-11-03 23:23:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:55,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:23:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:23:55,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:23:55,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604961813] [2021-11-03 23:23:55,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604961813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:23:55,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21015293] [2021-11-03 23:23:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:23:55,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:23:55,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:23:55,436 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) [2021-11-03 23:23:55,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 23:23:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:23:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-03 23:23:55,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:23:55,672 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 23:23:55,672 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 63 treesize of output 50 [2021-11-03 23:23:55,691 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-03 23:23:55,692 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 71 treesize of output 54 [2021-11-03 23:23:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 23:23:59,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:23:59,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21015293] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:23:59,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:23:59,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2021-11-03 23:23:59,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805393112] [2021-11-03 23:23:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:23:59,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 23:23:59,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:23:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 23:23:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=621, Unknown=1, NotChecked=0, Total=702 [2021-11-03 23:23:59,345 INFO L87 Difference]: Start difference. First operand 487 states and 588 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:23:59,756 INFO L93 Difference]: Finished difference Result 644 states and 780 transitions. [2021-11-03 23:23:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 23:23:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 23:23:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:23:59,758 INFO L225 Difference]: With dead ends: 644 [2021-11-03 23:23:59,758 INFO L226 Difference]: Without dead ends: 488 [2021-11-03 23:23:59,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1664.37ms TimeCoverageRelationStatistics Valid=89, Invalid=722, Unknown=1, NotChecked=0, Total=812 [2021-11-03 23:23:59,760 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 278.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1657 IncrementalHoareTripleChecker+Unchecked, 345.11ms IncrementalHoareTripleChecker+Time [2021-11-03 23:23:59,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 2421 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [1 Valid, 763 Invalid, 0 Unknown, 1657 Unchecked, 345.11ms Time] [2021-11-03 23:23:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-03 23:23:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-03 23:23:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 477 states have (on average 1.228511530398323) internal successors, (586), 486 states have internal predecessors, (586), 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) [2021-11-03 23:23:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 586 transitions. [2021-11-03 23:23:59,788 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 586 transitions. Word has length 82 [2021-11-03 23:23:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:23:59,788 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 586 transitions. [2021-11-03 23:23:59,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:23:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 586 transitions. [2021-11-03 23:23:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:23:59,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:23:59,790 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] [2021-11-03 23:23:59,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 23:24:00,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-03 23:24:00,004 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:24:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:24:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 433222768, now seen corresponding path program 1 times [2021-11-03 23:24:00,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:24:00,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315199533] [2021-11-03 23:24:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:00,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:24:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:24:00,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:24:00,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315199533] [2021-11-03 23:24:00,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315199533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:24:00,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625689505] [2021-11-03 23:24:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:24:00,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:24:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:24:00,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:24:00,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-03 23:24:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:24:00,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-03 23:24:00,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:24:00,445 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 23:24:00,445 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 33 treesize of output 29 [2021-11-03 23:24:12,597 WARN L210 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 23:24:30,200 WARN L210 SmtUtils]: Spent 9.50s on a formula simplification that was a NOOP. DAG size: 21 [2021-11-03 23:24:42,308 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-03 23:24:54,492 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 25 [2021-11-03 23:25:04,571 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-03 23:25:14,306 WARN L210 SmtUtils]: Spent 9.58s on a formula simplification that was a NOOP. DAG size: 26 [2021-11-03 23:25:21,805 WARN L210 SmtUtils]: Spent 7.44s on a formula simplification that was a NOOP. DAG size: 24 [2021-11-03 23:25:31,929 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-03 23:25:42,342 WARN L210 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-03 23:25:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:25:42,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:25:42,735 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 381 treesize of output 365 [2021-11-03 23:25:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:25:42,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625689505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:25:42,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:25:42,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2021-11-03 23:25:42,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895841933] [2021-11-03 23:25:42,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:25:42,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-03 23:25:42,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:25:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-03 23:25:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=805, Unknown=8, NotChecked=0, Total=930 [2021-11-03 23:25:42,910 INFO L87 Difference]: Start difference. First operand 487 states and 586 transitions. Second operand has 31 states, 31 states have (on average 6.032258064516129) internal successors, (187), 31 states have internal predecessors, (187), 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) [2021-11-03 23:25:52,612 WARN L210 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 23 [2021-11-03 23:26:12,437 WARN L210 SmtUtils]: Spent 19.81s on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2021-11-03 23:26:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:13,982 INFO L93 Difference]: Finished difference Result 860 states and 1031 transitions. [2021-11-03 23:26:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 23:26:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.032258064516129) internal successors, (187), 31 states have internal predecessors, (187), 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 82 [2021-11-03 23:26:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:13,985 INFO L225 Difference]: With dead ends: 860 [2021-11-03 23:26:13,986 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 23:26:13,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 130744.98ms TimeCoverageRelationStatistics Valid=141, Invalid=973, Unknown=8, NotChecked=0, Total=1122 [2021-11-03 23:26:13,987 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 355 mSDsluCounter, 2790 mSDsCounter, 0 mSdLazyCounter, 3643 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1251.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.43ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 1531.92ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:13,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 0 Invalid, 3965 Unknown, 0 Unchecked, 10.43ms Time], IncrementalHoareTripleChecker [8 Valid, 3643 Invalid, 0 Unknown, 314 Unchecked, 1531.92ms Time] [2021-11-03 23:26:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 23:26:14,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 577. [2021-11-03 23:26:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 567 states have (on average 1.216931216931217) internal successors, (690), 576 states have internal predecessors, (690), 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) [2021-11-03 23:26:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 690 transitions. [2021-11-03 23:26:14,025 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 690 transitions. Word has length 82 [2021-11-03 23:26:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:14,026 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 690 transitions. [2021-11-03 23:26:14,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.032258064516129) internal successors, (187), 31 states have internal predecessors, (187), 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) [2021-11-03 23:26:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 690 transitions. [2021-11-03 23:26:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:26:14,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:14,028 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] [2021-11-03 23:26:14,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-03 23:26:14,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-03 23:26:14,244 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:14,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1134287346, now seen corresponding path program 1 times [2021-11-03 23:26:14,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:14,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141862449] [2021-11-03 23:26:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:14,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 23:26:14,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:14,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141862449] [2021-11-03 23:26:14,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141862449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:26:14,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:26:14,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:26:14,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669175715] [2021-11-03 23:26:14,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:26:14,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:26:14,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:14,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:26:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:26:14,350 INFO L87 Difference]: Start difference. First operand 577 states and 690 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:26:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:14,791 INFO L93 Difference]: Finished difference Result 735 states and 883 transitions. [2021-11-03 23:26:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:26:14,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-03 23:26:14,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:14,794 INFO L225 Difference]: With dead ends: 735 [2021-11-03 23:26:14,794 INFO L226 Difference]: Without dead ends: 575 [2021-11-03 23:26:14,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 32.97ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:26:14,795 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 647 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 300.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.37ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 379.95ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:14,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [647 Valid, 0 Invalid, 595 Unknown, 0 Unchecked, 4.37ms Time], IncrementalHoareTripleChecker [16 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 379.95ms Time] [2021-11-03 23:26:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-03 23:26:14,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-11-03 23:26:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 565 states have (on average 1.2070796460176991) internal successors, (682), 574 states have internal predecessors, (682), 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) [2021-11-03 23:26:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 682 transitions. [2021-11-03 23:26:14,831 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 682 transitions. Word has length 82 [2021-11-03 23:26:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:14,832 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 682 transitions. [2021-11-03 23:26:14,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:26:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 682 transitions. [2021-11-03 23:26:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:26:14,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:14,833 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] [2021-11-03 23:26:14,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 23:26:14,834 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:14,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash -100461972, now seen corresponding path program 1 times [2021-11-03 23:26:14,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:14,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589705033] [2021-11-03 23:26:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:14,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:26:15,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589705033] [2021-11-03 23:26:15,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589705033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:26:15,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829625596] [2021-11-03 23:26:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:15,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:26:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:26:15,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:26:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-03 23:26:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:15,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-03 23:26:15,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:26:15,279 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 23:26:15,280 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 29 treesize of output 17 [2021-11-03 23:26:16,247 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-03 23:26:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:26:16,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:26:16,704 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 349 treesize of output 333 [2021-11-03 23:26:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 23:26:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829625596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:26:16,839 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:26:16,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 16] total 38 [2021-11-03 23:26:16,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621076546] [2021-11-03 23:26:16,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:26:16,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-03 23:26:16,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-03 23:26:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1271, Unknown=0, NotChecked=0, Total=1406 [2021-11-03 23:26:16,842 INFO L87 Difference]: Start difference. First operand 575 states and 682 transitions. Second operand has 38 states, 38 states have (on average 4.5) internal successors, (171), 38 states have internal predecessors, (171), 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) [2021-11-03 23:26:41,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:41,183 INFO L93 Difference]: Finished difference Result 1383 states and 1654 transitions. [2021-11-03 23:26:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-03 23:26:41,183 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.5) internal successors, (171), 38 states have internal predecessors, (171), 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 82 [2021-11-03 23:26:41,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:41,187 INFO L225 Difference]: With dead ends: 1383 [2021-11-03 23:26:41,187 INFO L226 Difference]: Without dead ends: 1175 [2021-11-03 23:26:41,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 21244.21ms TimeCoverageRelationStatistics Valid=597, Invalid=3030, Unknown=33, NotChecked=0, Total=3660 [2021-11-03 23:26:41,191 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2684 mSDsluCounter, 7515 mSDsCounter, 0 mSdLazyCounter, 9261 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2927.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2684 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.53ms SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 9261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2319 IncrementalHoareTripleChecker+Unchecked, 3572.87ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:41,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2684 Valid, 0 Invalid, 11841 Unknown, 0 Unchecked, 23.53ms Time], IncrementalHoareTripleChecker [261 Valid, 9261 Invalid, 0 Unknown, 2319 Unchecked, 3572.87ms Time] [2021-11-03 23:26:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2021-11-03 23:26:41,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 620. [2021-11-03 23:26:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 610 states have (on average 1.2065573770491804) internal successors, (736), 619 states have internal predecessors, (736), 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) [2021-11-03 23:26:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 736 transitions. [2021-11-03 23:26:41,231 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 736 transitions. Word has length 82 [2021-11-03 23:26:41,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:41,232 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 736 transitions. [2021-11-03 23:26:41,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.5) internal successors, (171), 38 states have internal predecessors, (171), 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) [2021-11-03 23:26:41,232 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 736 transitions. [2021-11-03 23:26:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 23:26:41,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:41,234 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] [2021-11-03 23:26:41,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-03 23:26:41,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-03 23:26:41,448 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:41,448 INFO L85 PathProgramCache]: Analyzing trace with hash 242691180, now seen corresponding path program 1 times [2021-11-03 23:26:41,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:41,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063735789] [2021-11-03 23:26:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:41,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:41,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:41,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063735789] [2021-11-03 23:26:41,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063735789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:26:41,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:26:41,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 23:26:41,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520411203] [2021-11-03 23:26:41,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:26:41,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 23:26:41,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:41,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 23:26:41,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:26:41,576 INFO L87 Difference]: Start difference. First operand 620 states and 736 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 23:26:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:43,136 INFO L93 Difference]: Finished difference Result 1358 states and 1599 transitions. [2021-11-03 23:26:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 23:26:43,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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 82 [2021-11-03 23:26:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:43,148 INFO L225 Difference]: With dead ends: 1358 [2021-11-03 23:26:43,148 INFO L226 Difference]: Without dead ends: 1055 [2021-11-03 23:26:43,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 316.86ms TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:26:43,150 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1448 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 985.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.92ms SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1198.15ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:43,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 0 Invalid, 2311 Unknown, 0 Unchecked, 5.92ms Time], IncrementalHoareTripleChecker [156 Valid, 2155 Invalid, 0 Unknown, 0 Unchecked, 1198.15ms Time] [2021-11-03 23:26:43,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-11-03 23:26:43,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 614. [2021-11-03 23:26:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 604 states have (on average 1.1937086092715232) internal successors, (721), 613 states have internal predecessors, (721), 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) [2021-11-03 23:26:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 721 transitions. [2021-11-03 23:26:43,194 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 721 transitions. Word has length 82 [2021-11-03 23:26:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:43,195 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 721 transitions. [2021-11-03 23:26:43,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 23:26:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 721 transitions. [2021-11-03 23:26:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 23:26:43,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:43,196 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] [2021-11-03 23:26:43,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 23:26:43,197 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 407517578, now seen corresponding path program 1 times [2021-11-03 23:26:43,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:43,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009602379] [2021-11-03 23:26:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:43,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:43,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:43,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009602379] [2021-11-03 23:26:43,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009602379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:26:43,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917402515] [2021-11-03 23:26:43,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:43,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:26:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:26:43,436 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:26:43,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-03 23:26:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:43,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-03 23:26:43,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:26:43,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 23:26:43,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:26:43,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-03 23:26:43,681 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 23:26:43,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-03 23:26:43,767 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-03 23:26:43,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 43 [2021-11-03 23:26:44,819 INFO L354 Elim1Store]: treesize reduction 36, result has 25.0 percent of original size [2021-11-03 23:26:44,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 45 treesize of output 35 [2021-11-03 23:26:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:44,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:26:50,370 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 845 treesize of output 837 [2021-11-03 23:26:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917402515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:26:51,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:26:51,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2021-11-03 23:26:51,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917300372] [2021-11-03 23:26:51,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:26:51,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-03 23:26:51,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-03 23:26:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=683, Unknown=2, NotChecked=0, Total=756 [2021-11-03 23:26:51,014 INFO L87 Difference]: Start difference. First operand 614 states and 721 transitions. Second operand has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2021-11-03 23:26:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:54,126 INFO L93 Difference]: Finished difference Result 1289 states and 1539 transitions. [2021-11-03 23:26:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 23:26:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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 [2021-11-03 23:26:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:54,129 INFO L225 Difference]: With dead ends: 1289 [2021-11-03 23:26:54,130 INFO L226 Difference]: Without dead ends: 1034 [2021-11-03 23:26:54,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 6071.68ms TimeCoverageRelationStatistics Valid=189, Invalid=1701, Unknown=2, NotChecked=0, Total=1892 [2021-11-03 23:26:54,132 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 672 mSDsluCounter, 5472 mSDsCounter, 0 mSdLazyCounter, 5905 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2110.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.23ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 5905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1564 IncrementalHoareTripleChecker+Unchecked, 2556.06ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:54,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 0 Invalid, 7500 Unknown, 0 Unchecked, 15.23ms Time], IncrementalHoareTripleChecker [31 Valid, 5905 Invalid, 0 Unknown, 1564 Unchecked, 2556.06ms Time] [2021-11-03 23:26:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-11-03 23:26:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 568. [2021-11-03 23:26:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 558 states have (on average 1.1989247311827957) internal successors, (669), 567 states have internal predecessors, (669), 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) [2021-11-03 23:26:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 669 transitions. [2021-11-03 23:26:54,177 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 669 transitions. Word has length 84 [2021-11-03 23:26:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 669 transitions. [2021-11-03 23:26:54,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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) [2021-11-03 23:26:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 669 transitions. [2021-11-03 23:26:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-03 23:26:54,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:54,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:26:54,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-03 23:26:54,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:26:54,395 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash 712721433, now seen corresponding path program 1 times [2021-11-03 23:26:54,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:54,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199717621] [2021-11-03 23:26:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:54,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:54,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 23:26:54,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:54,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199717621] [2021-11-03 23:26:54,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199717621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:26:54,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:26:54,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 23:26:54,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678692789] [2021-11-03 23:26:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:26:54,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 23:26:54,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 23:26:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 23:26:54,496 INFO L87 Difference]: Start difference. First operand 568 states and 669 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:26:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:26:55,442 INFO L93 Difference]: Finished difference Result 1303 states and 1532 transitions. [2021-11-03 23:26:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 23:26:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-03 23:26:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:26:55,446 INFO L225 Difference]: With dead ends: 1303 [2021-11-03 23:26:55,446 INFO L226 Difference]: Without dead ends: 888 [2021-11-03 23:26:55,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.05ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:26:55,447 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 535 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 671.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 843.71ms IncrementalHoareTripleChecker+Time [2021-11-03 23:26:55,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 0 Invalid, 1681 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [22 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 843.71ms Time] [2021-11-03 23:26:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-03 23:26:55,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 552. [2021-11-03 23:26:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 542 states have (on average 1.1863468634686347) internal successors, (643), 551 states have internal predecessors, (643), 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) [2021-11-03 23:26:55,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 643 transitions. [2021-11-03 23:26:55,487 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 643 transitions. Word has length 89 [2021-11-03 23:26:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:26:55,487 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 643 transitions. [2021-11-03 23:26:55,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:26:55,487 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 643 transitions. [2021-11-03 23:26:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 23:26:55,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:26:55,489 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:26:55,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 23:26:55,489 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:26:55,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:26:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1170907302, now seen corresponding path program 1 times [2021-11-03 23:26:55,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:26:55,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873454920] [2021-11-03 23:26:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:55,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:26:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:55,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:26:55,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873454920] [2021-11-03 23:26:55,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873454920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:26:55,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274993350] [2021-11-03 23:26:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:26:55,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:26:55,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:26:55,678 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:26:55,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-03 23:26:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:26:55,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-03 23:26:55,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:26:55,997 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 15 treesize of output 11 [2021-11-03 23:26:56,227 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:26:56,228 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-03 23:26:56,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:56,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:26:56,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:26:56,489 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2021-11-03 23:26:56,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-03 23:26:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:26:56,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274993350] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 23:26:56,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 23:26:56,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2021-11-03 23:26:56,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889952417] [2021-11-03 23:26:56,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-03 23:26:56,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-03 23:26:56,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:26:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-03 23:26:56,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2021-11-03 23:26:56,720 INFO L87 Difference]: Start difference. First operand 552 states and 643 transitions. Second operand has 35 states, 35 states have (on average 6.428571428571429) internal successors, (225), 35 states have internal predecessors, (225), 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) [2021-11-03 23:27:01,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:01,096 INFO L93 Difference]: Finished difference Result 1209 states and 1433 transitions. [2021-11-03 23:27:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-03 23:27:01,098 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.428571428571429) internal successors, (225), 35 states have internal predecessors, (225), 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 90 [2021-11-03 23:27:01,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:01,100 INFO L225 Difference]: With dead ends: 1209 [2021-11-03 23:27:01,100 INFO L226 Difference]: Without dead ends: 908 [2021-11-03 23:27:01,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1580.88ms TimeCoverageRelationStatistics Valid=819, Invalid=3603, Unknown=0, NotChecked=0, Total=4422 [2021-11-03 23:27:01,102 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 712 mSDsluCounter, 8516 mSDsCounter, 0 mSdLazyCounter, 9335 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2559.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.44ms SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 9335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 3109.29ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:01,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 0 Invalid, 10544 Unknown, 0 Unchecked, 18.44ms Time], IncrementalHoareTripleChecker [105 Valid, 9335 Invalid, 0 Unknown, 1104 Unchecked, 3109.29ms Time] [2021-11-03 23:27:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-03 23:27:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 605. [2021-11-03 23:27:01,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 595 states have (on average 1.188235294117647) internal successors, (707), 604 states have internal predecessors, (707), 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) [2021-11-03 23:27:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 707 transitions. [2021-11-03 23:27:01,145 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 707 transitions. Word has length 90 [2021-11-03 23:27:01,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:01,145 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 707 transitions. [2021-11-03 23:27:01,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.428571428571429) internal successors, (225), 35 states have internal predecessors, (225), 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) [2021-11-03 23:27:01,145 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 707 transitions. [2021-11-03 23:27:01,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 23:27:01,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:01,147 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:01,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-03 23:27:01,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-03 23:27:01,372 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 793478490, now seen corresponding path program 1 times [2021-11-03 23:27:01,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:01,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172254719] [2021-11-03 23:27:01,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:01,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 23:27:01,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:01,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172254719] [2021-11-03 23:27:01,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172254719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:01,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:27:01,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:27:01,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836263675] [2021-11-03 23:27:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:01,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:27:01,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:27:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:27:01,440 INFO L87 Difference]: Start difference. First operand 605 states and 707 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-11-03 23:27:01,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:01,827 INFO L93 Difference]: Finished difference Result 1005 states and 1192 transitions. [2021-11-03 23:27:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 23:27:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 90 [2021-11-03 23:27:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:01,829 INFO L225 Difference]: With dead ends: 1005 [2021-11-03 23:27:01,829 INFO L226 Difference]: Without dead ends: 640 [2021-11-03 23:27:01,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.33ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:27:01,831 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.01ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:01,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 835 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [25 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 347.01ms Time] [2021-11-03 23:27:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-03 23:27:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 621. [2021-11-03 23:27:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 611 states have (on average 1.1783960720130933) internal successors, (720), 620 states have internal predecessors, (720), 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) [2021-11-03 23:27:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 720 transitions. [2021-11-03 23:27:01,875 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 720 transitions. Word has length 90 [2021-11-03 23:27:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:01,875 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 720 transitions. [2021-11-03 23:27:01,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-11-03 23:27:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 720 transitions. [2021-11-03 23:27:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 23:27:01,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:01,877 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:01,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 23:27:01,878 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1235107620, now seen corresponding path program 1 times [2021-11-03 23:27:01,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:01,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318898109] [2021-11-03 23:27:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:01,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 23:27:01,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:01,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318898109] [2021-11-03 23:27:01,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318898109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:01,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:27:01,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 23:27:01,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212146818] [2021-11-03 23:27:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:01,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 23:27:01,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 23:27:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 23:27:01,929 INFO L87 Difference]: Start difference. First operand 621 states and 720 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-03 23:27:02,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:02,376 INFO L93 Difference]: Finished difference Result 1083 states and 1268 transitions. [2021-11-03 23:27:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 23:27:02,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 90 [2021-11-03 23:27:02,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:02,379 INFO L225 Difference]: With dead ends: 1083 [2021-11-03 23:27:02,380 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 23:27:02,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 23:27:02,381 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 203 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.22ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.83ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:02,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 0 Invalid, 696 Unknown, 0 Unchecked, 1.22ms Time], IncrementalHoareTripleChecker [22 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 389.83ms Time] [2021-11-03 23:27:02,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 23:27:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 525. [2021-11-03 23:27:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 515 states have (on average 1.1514563106796116) internal successors, (593), 524 states have internal predecessors, (593), 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) [2021-11-03 23:27:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 593 transitions. [2021-11-03 23:27:02,429 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 593 transitions. Word has length 90 [2021-11-03 23:27:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 593 transitions. [2021-11-03 23:27:02,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-03 23:27:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 593 transitions. [2021-11-03 23:27:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 23:27:02,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:02,431 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, 1, 1] [2021-11-03 23:27:02,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 23:27:02,431 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1488476706, now seen corresponding path program 2 times [2021-11-03 23:27:02,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:02,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848341004] [2021-11-03 23:27:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:02,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 23:27:02,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:02,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848341004] [2021-11-03 23:27:02,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848341004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:02,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522278343] [2021-11-03 23:27:02,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 23:27:02,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:02,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:02,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 23:27:02,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 23:27:02,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 23:27:02,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-03 23:27:02,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:02,842 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-03 23:27:02,843 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 63 treesize of output 58 [2021-11-03 23:27:02,854 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-03 23:27:02,855 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 73 treesize of output 54 [2021-11-03 23:27:07,580 INFO L354 Elim1Store]: treesize reduction 20, result has 59.2 percent of original size [2021-11-03 23:27:07,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 92 [2021-11-03 23:27:07,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:27:07,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 95 [2021-11-03 23:27:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-03 23:27:07,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:27:07,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522278343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:07,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:27:07,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 21 [2021-11-03 23:27:07,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934397486] [2021-11-03 23:27:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:07,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 23:27:07,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 23:27:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=376, Unknown=1, NotChecked=0, Total=420 [2021-11-03 23:27:07,714 INFO L87 Difference]: Start difference. First operand 525 states and 593 transitions. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:27:08,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:08,064 INFO L93 Difference]: Finished difference Result 688 states and 787 transitions. [2021-11-03 23:27:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 23:27:08,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-03 23:27:08,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:08,066 INFO L225 Difference]: With dead ends: 688 [2021-11-03 23:27:08,066 INFO L226 Difference]: Without dead ends: 526 [2021-11-03 23:27:08,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2856.01ms TimeCoverageRelationStatistics Valid=52, Invalid=453, Unknown=1, NotChecked=0, Total=506 [2021-11-03 23:27:08,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.93ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1450 IncrementalHoareTripleChecker+Unchecked, 287.51ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:08,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 2203 Unknown, 0 Unchecked, 1.93ms Time], IncrementalHoareTripleChecker [1 Valid, 752 Invalid, 0 Unknown, 1450 Unchecked, 287.51ms Time] [2021-11-03 23:27:08,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-03 23:27:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 480. [2021-11-03 23:27:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 470 states have (on average 1.1553191489361703) internal successors, (543), 479 states have internal predecessors, (543), 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) [2021-11-03 23:27:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 543 transitions. [2021-11-03 23:27:08,101 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 543 transitions. Word has length 90 [2021-11-03 23:27:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:08,102 INFO L470 AbstractCegarLoop]: Abstraction has 480 states and 543 transitions. [2021-11-03 23:27:08,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:27:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 543 transitions. [2021-11-03 23:27:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 23:27:08,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:08,103 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:08,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 23:27:08,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-03 23:27:08,327 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:08,328 INFO L85 PathProgramCache]: Analyzing trace with hash -11551711, now seen corresponding path program 1 times [2021-11-03 23:27:08,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:08,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865325876] [2021-11-03 23:27:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:08,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:27:08,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:08,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865325876] [2021-11-03 23:27:08,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865325876] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:08,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56890657] [2021-11-03 23:27:08,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:08,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:08,628 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:08,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-03 23:27:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:08,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-03 23:27:08,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:08,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:08,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 23:27:08,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:08,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-03 23:27:10,386 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-03 23:27:10,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 68 [2021-11-03 23:27:10,393 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-03 23:27:10,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-11-03 23:27:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-03 23:27:10,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:27:11,820 INFO L354 Elim1Store]: treesize reduction 331, result has 32.4 percent of original size [2021-11-03 23:27:11,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 4070 treesize of output 3752 [2021-11-03 23:27:12,067 INFO L354 Elim1Store]: treesize reduction 453, result has 25.0 percent of original size [2021-11-03 23:27:12,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 29 case distinctions, treesize of input 20017 treesize of output 18789 [2021-11-03 23:27:13,178 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-11-03 23:27:13,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 14680 treesize of output 14512 [2021-11-03 23:27:13,377 INFO L354 Elim1Store]: treesize reduction 20, result has 63.6 percent of original size [2021-11-03 23:27:13,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 14510 treesize of output 14018 [2021-11-03 23:27:14,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 23:27:14,031 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:27:14,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 13066 treesize of output 13052 [2021-11-03 23:27:14,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-03 23:27:14,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:27:14,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-03 23:27:14,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936647044] [2021-11-03 23:27:14,075 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-03 23:27:14,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 23:27:14,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:14,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 23:27:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2387, Unknown=0, NotChecked=0, Total=2652 [2021-11-03 23:27:14,077 INFO L87 Difference]: Start difference. First operand 480 states and 543 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2021-11-03 23:27:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:15,726 INFO L93 Difference]: Finished difference Result 842 states and 967 transitions. [2021-11-03 23:27:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 23:27:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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 92 [2021-11-03 23:27:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:15,728 INFO L225 Difference]: With dead ends: 842 [2021-11-03 23:27:15,728 INFO L226 Difference]: Without dead ends: 547 [2021-11-03 23:27:15,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1835.49ms TimeCoverageRelationStatistics Valid=439, Invalid=3593, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 23:27:15,730 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 951 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 830.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.94ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 996.18ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:15,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 0 Invalid, 2163 Unknown, 0 Unchecked, 4.94ms Time], IncrementalHoareTripleChecker [52 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 996.18ms Time] [2021-11-03 23:27:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-03 23:27:15,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 495. [2021-11-03 23:27:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 485 states have (on average 1.1505154639175257) internal successors, (558), 494 states have internal predecessors, (558), 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) [2021-11-03 23:27:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 558 transitions. [2021-11-03 23:27:15,771 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 558 transitions. Word has length 92 [2021-11-03 23:27:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:15,771 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 558 transitions. [2021-11-03 23:27:15,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 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) [2021-11-03 23:27:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 558 transitions. [2021-11-03 23:27:15,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-03 23:27:15,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:15,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:15,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-11-03 23:27:15,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-03 23:27:15,988 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:15,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 354250214, now seen corresponding path program 2 times [2021-11-03 23:27:15,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:15,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698232689] [2021-11-03 23:27:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:15,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 23:27:16,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:16,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698232689] [2021-11-03 23:27:16,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698232689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:16,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:27:16,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 23:27:16,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033372853] [2021-11-03 23:27:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:16,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 23:27:16,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 23:27:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 23:27:16,243 INFO L87 Difference]: Start difference. First operand 495 states and 558 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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) [2021-11-03 23:27:17,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:17,546 INFO L93 Difference]: Finished difference Result 834 states and 964 transitions. [2021-11-03 23:27:17,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 23:27:17,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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 100 [2021-11-03 23:27:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:17,548 INFO L225 Difference]: With dead ends: 834 [2021-11-03 23:27:17,548 INFO L226 Difference]: Without dead ends: 676 [2021-11-03 23:27:17,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 183.09ms TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-03 23:27:17,549 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 908 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 893.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1081.73ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:17,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 0 Invalid, 2404 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [41 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1081.73ms Time] [2021-11-03 23:27:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-03 23:27:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 495. [2021-11-03 23:27:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 485 states have (on average 1.1463917525773195) internal successors, (556), 494 states have internal predecessors, (556), 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) [2021-11-03 23:27:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 556 transitions. [2021-11-03 23:27:17,600 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 556 transitions. Word has length 100 [2021-11-03 23:27:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:17,600 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 556 transitions. [2021-11-03 23:27:17,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 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) [2021-11-03 23:27:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 556 transitions. [2021-11-03 23:27:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-03 23:27:17,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:17,602 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:17,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 23:27:17,602 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:17,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2060774583, now seen corresponding path program 1 times [2021-11-03 23:27:17,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:17,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070980736] [2021-11-03 23:27:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:17,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:17,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-03 23:27:17,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:17,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070980736] [2021-11-03 23:27:17,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070980736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:17,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 23:27:17,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 23:27:17,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697579176] [2021-11-03 23:27:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:17,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:27:17,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:27:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 23:27:17,709 INFO L87 Difference]: Start difference. First operand 495 states and 556 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2021-11-03 23:27:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:18,044 INFO L93 Difference]: Finished difference Result 653 states and 745 transitions. [2021-11-03 23:27:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:27:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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 102 [2021-11-03 23:27:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:18,046 INFO L225 Difference]: With dead ends: 653 [2021-11-03 23:27:18,046 INFO L226 Difference]: Without dead ends: 495 [2021-11-03 23:27:18,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.07ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-03 23:27:18,047 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1050 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.20ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 263.93ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 0 Invalid, 396 Unknown, 0 Unchecked, 1.20ms Time], IncrementalHoareTripleChecker [38 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 263.93ms Time] [2021-11-03 23:27:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-11-03 23:27:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 341. [2021-11-03 23:27:18,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 331 states have (on average 1.1752265861027191) internal successors, (389), 340 states have internal predecessors, (389), 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) [2021-11-03 23:27:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 389 transitions. [2021-11-03 23:27:18,072 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 389 transitions. Word has length 102 [2021-11-03 23:27:18,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:18,073 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 389 transitions. [2021-11-03 23:27:18,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2021-11-03 23:27:18,073 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 389 transitions. [2021-11-03 23:27:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 23:27:18,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:18,074 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:18,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 23:27:18,075 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:18,075 INFO L85 PathProgramCache]: Analyzing trace with hash -604319306, now seen corresponding path program 2 times [2021-11-03 23:27:18,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:18,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936832432] [2021-11-03 23:27:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:18,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 23:27:18,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:18,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936832432] [2021-11-03 23:27:18,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936832432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:18,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965167378] [2021-11-03 23:27:18,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 23:27:18,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:18,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:18,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:18,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-03 23:27:18,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 23:27:18,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 23:27:18,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-03 23:27:18,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:18,522 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-03 23:27:18,522 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 63 treesize of output 50 [2021-11-03 23:27:18,542 INFO L354 Elim1Store]: treesize reduction 31, result has 50.0 percent of original size [2021-11-03 23:27:18,542 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 71 treesize of output 54 [2021-11-03 23:27:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-03 23:27:23,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:27:23,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965167378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:23,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:27:23,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2021-11-03 23:27:23,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538723451] [2021-11-03 23:27:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:23,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 23:27:23,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 23:27:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2021-11-03 23:27:23,217 INFO L87 Difference]: Start difference. First operand 341 states and 389 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 23:27:23,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:23,516 INFO L93 Difference]: Finished difference Result 529 states and 613 transitions. [2021-11-03 23:27:23,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 23:27:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 23:27:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:23,518 INFO L225 Difference]: With dead ends: 529 [2021-11-03 23:27:23,518 INFO L226 Difference]: Without dead ends: 372 [2021-11-03 23:27:23,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2315.12ms TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2021-11-03 23:27:23,519 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1158 IncrementalHoareTripleChecker+Unchecked, 231.13ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:23,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 1693 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [0 Valid, 535 Invalid, 0 Unknown, 1158 Unchecked, 231.13ms Time] [2021-11-03 23:27:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-03 23:27:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 369. [2021-11-03 23:27:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 359 states have (on average 1.1727019498607243) internal successors, (421), 368 states have internal predecessors, (421), 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) [2021-11-03 23:27:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 421 transitions. [2021-11-03 23:27:23,551 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 421 transitions. Word has length 106 [2021-11-03 23:27:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:23,551 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 421 transitions. [2021-11-03 23:27:23,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 23:27:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 421 transitions. [2021-11-03 23:27:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 23:27:23,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:23,552 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:23,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-03 23:27:23,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-03 23:27:23,753 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:23,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1172535098, now seen corresponding path program 1 times [2021-11-03 23:27:23,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:23,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367492612] [2021-11-03 23:27:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:23,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 23:27:23,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:23,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367492612] [2021-11-03 23:27:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367492612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:23,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051959259] [2021-11-03 23:27:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:23,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:23,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:23,996 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:24,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 23:27:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:24,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 23:27:24,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:24,596 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:27:24,596 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 48 [2021-11-03 23:27:24,604 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:27:24,605 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 37 [2021-11-03 23:27:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-03 23:27:24,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:27:24,912 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 23:27:24,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051959259] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:24,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 23:27:24,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [17, 8] total 27 [2021-11-03 23:27:24,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339441919] [2021-11-03 23:27:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:24,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 23:27:24,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 23:27:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2021-11-03 23:27:24,914 INFO L87 Difference]: Start difference. First operand 369 states and 421 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2021-11-03 23:27:25,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:25,967 INFO L93 Difference]: Finished difference Result 820 states and 953 transitions. [2021-11-03 23:27:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 23:27:25,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-03 23:27:25,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:25,969 INFO L225 Difference]: With dead ends: 820 [2021-11-03 23:27:25,969 INFO L226 Difference]: Without dead ends: 536 [2021-11-03 23:27:25,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 468.51ms TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2021-11-03 23:27:25,970 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 490 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.67ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 949.17ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 0 Invalid, 2098 Unknown, 0 Unchecked, 3.67ms Time], IncrementalHoareTripleChecker [37 Valid, 2061 Invalid, 0 Unknown, 0 Unchecked, 949.17ms Time] [2021-11-03 23:27:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-11-03 23:27:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 285. [2021-11-03 23:27:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 275 states have (on average 1.1890909090909092) internal successors, (327), 284 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 23:27:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 327 transitions. [2021-11-03 23:27:25,994 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 327 transitions. Word has length 106 [2021-11-03 23:27:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:25,995 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 327 transitions. [2021-11-03 23:27:25,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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) [2021-11-03 23:27:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 327 transitions. [2021-11-03 23:27:25,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-03 23:27:25,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:25,996 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:26,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 23:27:26,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:26,200 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:26,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash -254662275, now seen corresponding path program 2 times [2021-11-03 23:27:26,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:26,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751973426] [2021-11-03 23:27:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:26,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 23:27:26,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:26,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751973426] [2021-11-03 23:27:26,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751973426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:26,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716705071] [2021-11-03 23:27:26,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 23:27:26,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:26,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:26,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:26,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-03 23:27:26,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-03 23:27:26,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 23:27:26,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-03 23:27:26,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:26,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-11-03 23:27:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 23:27:26,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-03 23:27:28,166 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-03 23:27:28,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 68 [2021-11-03 23:27:28,175 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-11-03 23:27:28,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 28 [2021-11-03 23:27:28,248 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-03 23:27:28,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 23:27:28,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716705071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 23:27:28,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-03 23:27:28,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [16] total 32 [2021-11-03 23:27:28,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809974568] [2021-11-03 23:27:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 23:27:28,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 23:27:28,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 23:27:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 23:27:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992 [2021-11-03 23:27:28,251 INFO L87 Difference]: Start difference. First operand 285 states and 327 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-11-03 23:27:34,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 23:27:34,271 INFO L93 Difference]: Finished difference Result 791 states and 919 transitions. [2021-11-03 23:27:34,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 23:27:34,272 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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 108 [2021-11-03 23:27:34,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 23:27:34,273 INFO L225 Difference]: With dead ends: 791 [2021-11-03 23:27:34,273 INFO L226 Difference]: Without dead ends: 625 [2021-11-03 23:27:34,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 3845.08ms TimeCoverageRelationStatistics Valid=777, Invalid=3915, Unknown=0, NotChecked=0, Total=4692 [2021-11-03 23:27:34,275 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1629 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 5594 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2193.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.32ms SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 5594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2581.34ms IncrementalHoareTripleChecker+Time [2021-11-03 23:27:34,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1629 Valid, 0 Invalid, 5714 Unknown, 0 Unchecked, 14.32ms Time], IncrementalHoareTripleChecker [120 Valid, 5594 Invalid, 0 Unknown, 0 Unchecked, 2581.34ms Time] [2021-11-03 23:27:34,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-11-03 23:27:34,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 384. [2021-11-03 23:27:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 374 states have (on average 1.1470588235294117) internal successors, (429), 383 states have internal predecessors, (429), 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) [2021-11-03 23:27:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 429 transitions. [2021-11-03 23:27:34,320 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 429 transitions. Word has length 108 [2021-11-03 23:27:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 23:27:34,320 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 429 transitions. [2021-11-03 23:27:34,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-11-03 23:27:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 429 transitions. [2021-11-03 23:27:34,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-03 23:27:34,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 23:27:34,322 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 23:27:34,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-03 23:27:34,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-03 23:27:34,536 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 23:27:34,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 23:27:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash 906647963, now seen corresponding path program 1 times [2021-11-03 23:27:34,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 23:27:34,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700603765] [2021-11-03 23:27:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:34,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 23:27:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-03 23:27:35,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 23:27:35,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700603765] [2021-11-03 23:27:35,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700603765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 23:27:35,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689566483] [2021-11-03 23:27:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 23:27:35,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 23:27:35,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 23:27:35,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 23:27:35,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-03 23:27:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 23:27:35,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 182 conjunts are in the unsatisfiable core [2021-11-03 23:27:35,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 23:27:35,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 23:27:35,573 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 23:27:35,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-03 23:27:35,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-03 23:27:35,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-03 23:27:35,734 INFO L354 Elim1Store]: treesize reduction 182, result has 15.0 percent of original size [2021-11-03 23:27:35,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 160 treesize of output 108 [2021-11-03 23:27:35,765 INFO L354 Elim1Store]: treesize reduction 150, result has 16.7 percent of original size [2021-11-03 23:27:35,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 131 treesize of output 94 [2021-11-03 23:27:38,738 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-11-03 23:27:38,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 88 [2021-11-03 23:27:38,756 INFO L354 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2021-11-03 23:27:38,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 62 treesize of output 38 [2021-11-03 23:27:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-03 23:27:38,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 23:27:39,981 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:27:39,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 428201 treesize of output 384441 [2021-11-03 23:27:58,679 WARN L210 SmtUtils]: Spent 18.70s on a formula simplification. DAG size of input: 473 DAG size of output: 472 [2021-11-03 23:28:02,494 INFO L354 Elim1Store]: treesize reduction 1524, result has 26.8 percent of original size [2021-11-03 23:28:02,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 1 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 81 case distinctions, treesize of input 5385964 treesize of output 5237488 [2021-11-03 23:30:57,964 WARN L210 SmtUtils]: Spent 2.92m on a formula simplification. DAG size of input: 2618 DAG size of output: 2609 [2021-11-03 23:31:08,185 WARN L210 SmtUtils]: Spent 10.21s on a formula simplification that was a NOOP. DAG size: 2196 [2021-11-03 23:31:08,418 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 23:31:08,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3410544 treesize of output 3409824 [2021-11-03 23:31:18,619 WARN L210 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 2225 [2021-11-03 23:31:38,781 WARN L210 SmtUtils]: Spent 9.98s on a formula simplification that was a NOOP. DAG size: 1986 [2021-11-03 23:32:31,822 WARN L210 SmtUtils]: Spent 36.08s on a formula simplification. DAG size of input: 1233 DAG size of output: 1233 [2021-11-03 23:33:00,344 WARN L210 SmtUtils]: Spent 7.20s on a formula simplification that was a NOOP. DAG size: 1221 Killed by 15