./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_string_new_from_c_str_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 d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:47:26,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:47:26,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:47:26,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:47:26,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:47:26,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:47:26,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:47:26,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:47:26,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:47:26,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:47:26,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:47:26,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:47:26,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:47:26,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:47:26,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:47:26,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:47:26,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:47:26,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:47:26,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:47:26,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:47:26,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:47:26,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:47:26,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:47:26,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:47:26,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:47:26,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:47:26,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:47:26,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:47:26,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:47:26,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:47:26,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:47:26,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:47:26,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:47:26,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:47:26,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:47:26,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:47:26,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:47:26,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:47:26,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:47:26,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:47:26,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:47:26,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:47:26,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:47:26,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:47:26,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:47:26,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:47:26,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:47:26,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:47:26,499 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:47:26,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:47:26,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:47:26,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:47:26,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:47:26,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:47:26,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:47:26,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:47:26,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:47:26,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:47:26,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:47:26,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:47:26,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:47:26,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:47:26,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:47:26,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:47:26,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:47:26,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:47:26,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:47:26,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:47:26,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:47:26,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:47:26,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:47:26,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8feb785efb60d35f9204dc33a12e80ea59efcec5de2b7c2ff320ef29197b0bd [2021-11-05 13:47:26,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:47:26,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:47:26,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:47:26,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:47:26,867 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:47:26,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-11-05 13:47:26,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed000c020/06d5b01b12164cfbbdac84ef6e702e45/FLAG741d76c3b [2021-11-05 13:47:27,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:47:27,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_new_from_c_str_harness.i [2021-11-05 13:47:27,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed000c020/06d5b01b12164cfbbdac84ef6e702e45/FLAG741d76c3b [2021-11-05 13:47:27,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed000c020/06d5b01b12164cfbbdac84ef6e702e45 [2021-11-05 13:47:27,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:47:27,743 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:47:27,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:47:27,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:47:27,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:47:27,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:47:27" (1/1) ... [2021-11-05 13:47:27,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20648378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:27, skipping insertion in model container [2021-11-05 13:47:27,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:47:27" (1/1) ... [2021-11-05 13:47:27,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:47:27,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:47:28,114 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_string_new_from_c_str_harness.i[4499,4512] [2021-11-05 13:47:28,120 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_string_new_from_c_str_harness.i[4559,4572] [2021-11-05 13:47:28,143 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:47:28,150 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:47:29,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,097 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,098 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,099 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,112 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,114 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:47:29,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:47:29,392 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:47:29,424 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:47:29,426 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:47:29,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:47:29,427 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:47:29,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:47:29,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:47:29,450 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:47:29,576 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:47:29,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:47:29,809 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:47:29,832 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_string_new_from_c_str_harness.i[4499,4512] [2021-11-05 13:47:29,834 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_string_new_from_c_str_harness.i[4559,4572] [2021-11-05 13:47:29,837 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:47:29,838 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:47:29,889 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,896 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,898 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,899 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,900 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,913 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:29,959 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:47:29,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:47:29,961 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:47:29,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:47:29,962 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:47:29,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:47:29,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:47:29,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:47:29,964 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:47:29,964 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:47:29,982 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:47:30,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:30,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:47:30,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:47:30,333 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:47:30,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30 WrapperNode [2021-11-05 13:47:30,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:47:30,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:47:30,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:47:30,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:47:30,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,448 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:47:30,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:47:30,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:47:30,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:47:30,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:47:30,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:47:30,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:47:30,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:47:30,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (1/1) ... [2021-11-05 13:47:30,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:47:30,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:30,669 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) [2021-11-05 13:47:30,687 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 [2021-11-05 13:47:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:47:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-05 13:47:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 13:47:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 13:47:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 13:47:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:47:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:47:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:47:30,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:47:30,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 13:47:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 13:47:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 13:47:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:47:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:47:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 13:47:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-05 13:47:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:47:39,243 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##49: assume !true; [2021-11-05 13:47:39,250 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:47:39,251 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2021-11-05 13:47:39,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:47:39 BoogieIcfgContainer [2021-11-05 13:47:39,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:47:39,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:47:39,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:47:39,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:47:39,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:47:27" (1/3) ... [2021-11-05 13:47:39,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a259426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:47:39, skipping insertion in model container [2021-11-05 13:47:39,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:47:30" (2/3) ... [2021-11-05 13:47:39,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a259426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:47:39, skipping insertion in model container [2021-11-05 13:47:39,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:47:39" (3/3) ... [2021-11-05 13:47:39,261 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_c_str_harness.i [2021-11-05 13:47:39,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:47:39,267 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-05 13:47:39,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:47:39,329 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 [2021-11-05 13:47:39,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-05 13:47:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 99 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:39,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 13:47:39,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:39,361 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] [2021-11-05 13:47:39,361 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:39,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2038439556, now seen corresponding path program 1 times [2021-11-05 13:47:39,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:39,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372550078] [2021-11-05 13:47:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:39,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:40,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:40,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372550078] [2021-11-05 13:47:40,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372550078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:40,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:40,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:47:40,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585782728] [2021-11-05 13:47:40,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:40,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:47:40,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:47:40,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:47:40,114 INFO L87 Difference]: Start difference. First operand has 100 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 99 states have internal predecessors, (130), 0 states have call successors, (0), 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 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:40,146 INFO L93 Difference]: Finished difference Result 195 states and 254 transitions. [2021-11-05 13:47:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:47:40,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-05 13:47:40,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:40,159 INFO L225 Difference]: With dead ends: 195 [2021-11-05 13:47:40,160 INFO L226 Difference]: Without dead ends: 94 [2021-11-05 13:47:40,163 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 [2021-11-05 13:47:40,170 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:40,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:47:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-05 13:47:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-11-05 13:47:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2021-11-05 13:47:40,222 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 28 [2021-11-05 13:47:40,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:40,224 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2021-11-05 13:47:40,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,224 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2021-11-05 13:47:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-05 13:47:40,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:40,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:40,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:47:40,232 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:40,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash -194592266, now seen corresponding path program 1 times [2021-11-05 13:47:40,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:40,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342912929] [2021-11-05 13:47:40,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:40,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:40,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:40,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342912929] [2021-11-05 13:47:40,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342912929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:40,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:40,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:47:40,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993801886] [2021-11-05 13:47:40,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:40,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:47:40,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:40,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:47:40,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:47:40,693 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:40,877 INFO L93 Difference]: Finished difference Result 203 states and 229 transitions. [2021-11-05 13:47:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:47:40,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2021-11-05 13:47:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:40,885 INFO L225 Difference]: With dead ends: 203 [2021-11-05 13:47:40,885 INFO L226 Difference]: Without dead ends: 166 [2021-11-05 13:47:40,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 160.71ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:47:40,886 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 161 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.27ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:40,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 489 Invalid, 16 Unknown, 0 Unchecked, 7.78ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 64.27ms Time] [2021-11-05 13:47:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-05 13:47:40,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 97. [2021-11-05 13:47:40,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.211111111111111) internal successors, (109), 96 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2021-11-05 13:47:40,900 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 28 [2021-11-05 13:47:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:40,901 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2021-11-05 13:47:40,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2021-11-05 13:47:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-05 13:47:40,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:40,902 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] [2021-11-05 13:47:40,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:47:40,903 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1532971438, now seen corresponding path program 1 times [2021-11-05 13:47:40,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:40,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210568189] [2021-11-05 13:47:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:40,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:41,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:41,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210568189] [2021-11-05 13:47:41,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210568189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:41,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:41,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:47:41,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663291286] [2021-11-05 13:47:41,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:41,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:47:41,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:47:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:47:41,363 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:41,581 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2021-11-05 13:47:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:47:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-11-05 13:47:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:41,583 INFO L225 Difference]: With dead ends: 144 [2021-11-05 13:47:41,583 INFO L226 Difference]: Without dead ends: 110 [2021-11-05 13:47:41,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 245.51ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:47:41,584 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 22 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.74ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.58ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:41,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 405 Invalid, 18 Unknown, 0 Unchecked, 1.74ms Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 74.58ms Time] [2021-11-05 13:47:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-05 13:47:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2021-11-05 13:47:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 99 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-11-05 13:47:41,595 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 30 [2021-11-05 13:47:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:41,597 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-11-05 13:47:41,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-11-05 13:47:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-05 13:47:41,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:41,598 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] [2021-11-05 13:47:41,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:47:41,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 62642754, now seen corresponding path program 1 times [2021-11-05 13:47:41,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:41,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436815363] [2021-11-05 13:47:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:41,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:42,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:42,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436815363] [2021-11-05 13:47:42,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436815363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:42,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:42,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 13:47:42,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533249855] [2021-11-05 13:47:42,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:42,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 13:47:42,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:42,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 13:47:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:47:42,429 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:43,010 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-11-05 13:47:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:47:43,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-05 13:47:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:43,012 INFO L225 Difference]: With dead ends: 100 [2021-11-05 13:47:43,012 INFO L226 Difference]: Without dead ends: 91 [2021-11-05 13:47:43,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 573.00ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:47:43,013 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 360 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 193.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.29ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.39ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:43,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 297 Invalid, 47 Unknown, 0 Unchecked, 3.29ms Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 215.39ms Time] [2021-11-05 13:47:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-05 13:47:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2021-11-05 13:47:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 87 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2021-11-05 13:47:43,021 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 32 [2021-11-05 13:47:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:43,021 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2021-11-05 13:47:43,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2021-11-05 13:47:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-05 13:47:43,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:43,023 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] [2021-11-05 13:47:43,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:47:43,024 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:43,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:43,024 INFO L85 PathProgramCache]: Analyzing trace with hash -359067237, now seen corresponding path program 1 times [2021-11-05 13:47:43,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:43,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306329294] [2021-11-05 13:47:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:43,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:43,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:43,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306329294] [2021-11-05 13:47:43,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306329294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:43,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:43,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:47:43,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559061487] [2021-11-05 13:47:43,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:43,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:47:43,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:47:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:47:43,430 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:43,573 INFO L93 Difference]: Finished difference Result 234 states and 262 transitions. [2021-11-05 13:47:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:47:43,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-05 13:47:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:43,577 INFO L225 Difference]: With dead ends: 234 [2021-11-05 13:47:43,577 INFO L226 Difference]: Without dead ends: 187 [2021-11-05 13:47:43,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.06ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:47:43,581 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 168 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.33ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:43,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 418 Invalid, 20 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 80.33ms Time] [2021-11-05 13:47:43,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-05 13:47:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 91. [2021-11-05 13:47:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 90 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2021-11-05 13:47:43,600 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 48 [2021-11-05 13:47:43,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:43,601 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2021-11-05 13:47:43,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2021-11-05 13:47:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-05 13:47:43,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:43,603 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] [2021-11-05 13:47:43,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:47:43,603 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:43,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash -762261897, now seen corresponding path program 1 times [2021-11-05 13:47:43,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:43,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307869032] [2021-11-05 13:47:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:43,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:44,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:44,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307869032] [2021-11-05 13:47:44,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307869032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:44,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:44,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:47:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427075241] [2021-11-05 13:47:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:44,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:47:44,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:47:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:47:44,121 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:44,620 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2021-11-05 13:47:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:47:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-05 13:47:44,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:44,622 INFO L225 Difference]: With dead ends: 143 [2021-11-05 13:47:44,623 INFO L226 Difference]: Without dead ends: 86 [2021-11-05 13:47:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 543.25ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:47:44,624 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 12 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 155.50ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:44,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 542 Invalid, 39 Unknown, 0 Unchecked, 1.87ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 155.50ms Time] [2021-11-05 13:47:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-05 13:47:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-05 13:47:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:44,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2021-11-05 13:47:44,629 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 50 [2021-11-05 13:47:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:44,630 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2021-11-05 13:47:44,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2021-11-05 13:47:44,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 13:47:44,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:44,631 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] [2021-11-05 13:47:44,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:47:44,638 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:44,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:44,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2087599505, now seen corresponding path program 1 times [2021-11-05 13:47:44,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:44,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915900912] [2021-11-05 13:47:44,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:44,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:46,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:46,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915900912] [2021-11-05 13:47:46,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915900912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:46,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:46,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:47:46,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864251887] [2021-11-05 13:47:46,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:46,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:47:46,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:46,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:47:46,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:47:46,283 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:48,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:47:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:50,969 INFO L93 Difference]: Finished difference Result 203 states and 223 transitions. [2021-11-05 13:47:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:47:50,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-05 13:47:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:50,971 INFO L225 Difference]: With dead ends: 203 [2021-11-05 13:47:50,971 INFO L226 Difference]: Without dead ends: 160 [2021-11-05 13:47:50,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2287.17ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-11-05 13:47:50,972 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 405 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2751.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.59ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2911.82ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:50,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 603 Invalid, 126 Unknown, 0 Unchecked, 5.59ms Time], IncrementalHoareTripleChecker [18 Valid, 107 Invalid, 1 Unknown, 0 Unchecked, 2911.82ms Time] [2021-11-05 13:47:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-05 13:47:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 107. [2021-11-05 13:47:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 106 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2021-11-05 13:47:50,986 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 51 [2021-11-05 13:47:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:50,987 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2021-11-05 13:47:50,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2021-11-05 13:47:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 13:47:50,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:50,988 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] [2021-11-05 13:47:50,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:47:50,989 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:50,990 INFO L85 PathProgramCache]: Analyzing trace with hash 397288175, now seen corresponding path program 1 times [2021-11-05 13:47:50,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:50,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265358626] [2021-11-05 13:47:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:50,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:51,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:51,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265358626] [2021-11-05 13:47:51,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265358626] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:47:51,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327376914] [2021-11-05 13:47:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:51,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:51,879 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) [2021-11-05 13:47:51,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:47:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:52,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-05 13:47:52,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:47:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:53,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:47:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:53,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327376914] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-05 13:47:53,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-05 13:47:53,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2021-11-05 13:47:53,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490358180] [2021-11-05 13:47:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:53,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:47:53,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:47:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:47:53,218 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:53,460 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2021-11-05 13:47:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:47:53,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-05 13:47:53,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:53,462 INFO L225 Difference]: With dead ends: 194 [2021-11-05 13:47:53,462 INFO L226 Difference]: Without dead ends: 152 [2021-11-05 13:47:53,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.05ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:47:53,463 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 48 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 208.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 226.36ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:53,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 16 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 226.36ms Time] [2021-11-05 13:47:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-05 13:47:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 109. [2021-11-05 13:47:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 103 states have (on average 1.1359223300970873) internal successors, (117), 108 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:53,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-11-05 13:47:53,474 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 52 [2021-11-05 13:47:53,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:53,475 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-11-05 13:47:53,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-11-05 13:47:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:47:53,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:53,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:53,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 13:47:53,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:53,691 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:53,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:53,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1342921069, now seen corresponding path program 1 times [2021-11-05 13:47:53,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:53,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263879277] [2021-11-05 13:47:53,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:53,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:47:54,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:54,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263879277] [2021-11-05 13:47:54,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263879277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:47:54,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:47:54,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:47:54,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144488687] [2021-11-05 13:47:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:47:54,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:47:54,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:47:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:47:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:47:54,109 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:47:54,298 INFO L93 Difference]: Finished difference Result 154 states and 168 transitions. [2021-11-05 13:47:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:47:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:47:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:47:54,299 INFO L225 Difference]: With dead ends: 154 [2021-11-05 13:47:54,299 INFO L226 Difference]: Without dead ends: 86 [2021-11-05 13:47:54,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 213.39ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:47:54,301 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 6 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.61ms IncrementalHoareTripleChecker+Time [2021-11-05 13:47:54,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 449 Invalid, 16 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 61.61ms Time] [2021-11-05 13:47:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-05 13:47:54,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-05 13:47:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.15) internal successors, (92), 85 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:54,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-11-05 13:47:54,308 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 53 [2021-11-05 13:47:54,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:47:54,310 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-11-05 13:47:54,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:47:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-11-05 13:47:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 13:47:54,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:47:54,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:47:54,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:47:54,316 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:47:54,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:47:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1779689521, now seen corresponding path program 1 times [2021-11-05 13:47:54,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:47:54,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205833299] [2021-11-05 13:47:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:54,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:47:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:47:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:47:56,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:47:56,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205833299] [2021-11-05 13:47:56,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205833299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:47:56,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309585748] [2021-11-05 13:47:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:47:56,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:47:56,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:47:56,728 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) [2021-11-05 13:47:56,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:49:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:49:58,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-05 13:49:58,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:49:59,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-05 13:50:00,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:50:00,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-05 13:50:00,578 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:50:00,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-05 13:50:00,908 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:50:00,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 35 [2021-11-05 13:50:01,510 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-05 13:50:01,511 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 75 treesize of output 38 [2021-11-05 13:50:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:50:02,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:50:10,771 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 330 treesize of output 310 [2021-11-05 13:50:10,821 INFO L354 Elim1Store]: treesize reduction 342, result has 0.3 percent of original size [2021-11-05 13:50:10,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 261560 treesize of output 1 [2021-11-05 13:50:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:50:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309585748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:50:10,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:50:10,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 11] total 41 [2021-11-05 13:50:10,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863784175] [2021-11-05 13:50:10,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:50:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-05 13:50:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:50:10,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-05 13:50:10,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1535, Unknown=1, NotChecked=0, Total=1640 [2021-11-05 13:50:10,890 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:12,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:15,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:17,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:19,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:50:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:50:37,337 INFO L93 Difference]: Finished difference Result 203 states and 223 transitions. [2021-11-05 13:50:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-05 13:50:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-05 13:50:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:50:37,339 INFO L225 Difference]: With dead ends: 203 [2021-11-05 13:50:37,339 INFO L226 Difference]: Without dead ends: 159 [2021-11-05 13:50:37,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 22524.32ms TimeCoverageRelationStatistics Valid=679, Invalid=4432, Unknown=1, NotChecked=0, Total=5112 [2021-11-05 13:50:37,341 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 527 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 124 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13334.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.35ms SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 14285.32ms IncrementalHoareTripleChecker+Time [2021-11-05 13:50:37,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 1541 Invalid, 1128 Unknown, 0 Unchecked, 17.35ms Time], IncrementalHoareTripleChecker [124 Valid, 887 Invalid, 4 Unknown, 113 Unchecked, 14285.32ms Time] [2021-11-05 13:50:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-05 13:50:37,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2021-11-05 13:50:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.173913043478261) internal successors, (108), 97 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-11-05 13:50:37,355 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 53 [2021-11-05 13:50:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:50:37,356 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-11-05 13:50:37,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.902439024390244) internal successors, (119), 41 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:37,357 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-11-05 13:50:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 13:50:37,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:50:37,358 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:50:37,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 13:50:37,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-05 13:50:37,572 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:50:37,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:50:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1756780467, now seen corresponding path program 1 times [2021-11-05 13:50:37,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:50:37,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975958788] [2021-11-05 13:50:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:50:37,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:50:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:50:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-05 13:50:38,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:50:38,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975958788] [2021-11-05 13:50:38,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975958788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:50:38,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:50:38,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 13:50:38,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864830832] [2021-11-05 13:50:38,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:50:38,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:50:38,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:50:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:50:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:50:38,357 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:50:39,401 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-11-05 13:50:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:50:39,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-05 13:50:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:50:39,403 INFO L225 Difference]: With dead ends: 142 [2021-11-05 13:50:39,403 INFO L226 Difference]: Without dead ends: 98 [2021-11-05 13:50:39,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1080.65ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-11-05 13:50:39,404 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 345 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 366.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.68ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 389.15ms IncrementalHoareTripleChecker+Time [2021-11-05 13:50:39,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 487 Invalid, 121 Unknown, 0 Unchecked, 2.68ms Time], IncrementalHoareTripleChecker [19 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 389.15ms Time] [2021-11-05 13:50:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-05 13:50:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-11-05 13:50:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.1304347826086956) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2021-11-05 13:50:39,414 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 54 [2021-11-05 13:50:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:50:39,414 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2021-11-05 13:50:39,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 13:50:39,414 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2021-11-05 13:50:39,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 13:50:39,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:50:39,415 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:50:39,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:50:39,416 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-05 13:50:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:50:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 987494449, now seen corresponding path program 2 times [2021-11-05 13:50:39,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:50:39,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396658788] [2021-11-05 13:50:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:50:39,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:50:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:50:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:50:43,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:50:43,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396658788] [2021-11-05 13:50:43,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396658788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:50:43,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908725363] [2021-11-05 13:50:43,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 13:50:43,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:50:43,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:50:43,341 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) [2021-11-05 13:50:43,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15