./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_length_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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:05:06,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:05:06,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:05:06,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:05:06,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:05:06,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:05:06,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:05:06,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:05:06,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:05:06,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:05:06,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:05:06,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:05:06,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:05:06,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:05:06,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:05:06,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:05:06,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:05:06,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:05:06,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:05:06,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:05:06,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:05:06,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:05:06,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:05:06,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:05:06,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:05:06,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:05:06,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:05:06,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:05:06,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:05:06,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:05:06,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:05:06,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:05:06,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:05:06,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:05:06,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:05:06,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:05:06,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:05:06,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:05:06,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:05:06,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:05:06,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:05:06,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:05:06,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:05:06,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:05:06,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:05:06,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:05:06,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:05:06,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:05:06,252 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:05:06,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:05:06,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:05:06,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:05:06,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:05:06,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:05:06,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:05:06,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:05:06,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:05:06,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:05:06,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:05:06,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:05:06,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:05:06,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:05:06,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:05:06,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:05:06,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:05:06,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:05:06,258 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2021-11-03 22:05:06,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:05:06,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:05:06,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:05:06,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:05:06,482 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:05:06,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-03 22:05:06,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68553e823/9f1801f03d4c4ed984add6021b9c22ec/FLAG6c87ccec5 [2021-11-03 22:05:07,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:05:07,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-03 22:05:07,182 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68553e823/9f1801f03d4c4ed984add6021b9c22ec/FLAG6c87ccec5 [2021-11-03 22:05:07,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68553e823/9f1801f03d4c4ed984add6021b9c22ec [2021-11-03 22:05:07,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:05:07,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:05:07,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:05:07,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:05:07,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:05:07,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:05:07" (1/1) ... [2021-11-03 22:05:07,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fac2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:07, skipping insertion in model container [2021-11-03 22:05:07,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:05:07" (1/1) ... [2021-11-03 22:05:07,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:05:07,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:05:07,647 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_array_list_length_harness.i[4495,4508] [2021-11-03 22:05:07,654 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_array_list_length_harness.i[4555,4568] [2021-11-03 22:05:07,670 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:05:07,676 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:05:08,160 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:05:08,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,208 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,218 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,219 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,221 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,221 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,222 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:05:08,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:05:08,464 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:05:08,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:05:08,466 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:05:08,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:05:08,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:05:08,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:05:08,468 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:05:08,469 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:05:08,543 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,548 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:05:08,621 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:05:08,632 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_array_list_length_harness.i[4495,4508] [2021-11-03 22:05:08,633 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_array_list_length_harness.i[4555,4568] [2021-11-03 22:05:08,634 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:05:08,634 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:05:08,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:05:08,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,689 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,727 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:05:08,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:05:08,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:05:08,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:05:08,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:05:08,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:05:08,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:05:08,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:05:08,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:05:08,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:05:08,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,754 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:05:08,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:05:08,907 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:05:08,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08 WrapperNode [2021-11-03 22:05:08,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:05:08,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:05:08,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:05:08,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:05:08,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:08,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:05:09,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:05:09,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:05:09,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:05:09,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:05:09,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:05:09,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:05:09,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:05:09,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (1/1) ... [2021-11-03 22:05:09,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:05:09,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:05:09,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 22:05:09,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 22:05:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:05:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:05:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:05:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:05:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:05:09,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:05:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:05:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 22:05:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:05:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:05:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:05:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:05:14,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:05:14,260 INFO L299 CfgBuilder]: Removed 106 assume(true) statements. [2021-11-03 22:05:14,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:05:14 BoogieIcfgContainer [2021-11-03 22:05:14,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:05:14,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:05:14,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:05:14,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:05:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:05:07" (1/3) ... [2021-11-03 22:05:14,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d402fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:05:14, skipping insertion in model container [2021-11-03 22:05:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:05:08" (2/3) ... [2021-11-03 22:05:14,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d402fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:05:14, skipping insertion in model container [2021-11-03 22:05:14,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:05:14" (3/3) ... [2021-11-03 22:05:14,269 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2021-11-03 22:05:14,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:05:14,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 22:05:14,311 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:05:14,317 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 22:05:14,317 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 22:05:14,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 120 states have (on average 1.425) internal successors, (171), 128 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:14,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 22:05:14,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:14,337 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] [2021-11-03 22:05:14,337 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash -478978032, now seen corresponding path program 1 times [2021-11-03 22:05:14,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:14,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497465041] [2021-11-03 22:05:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:14,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:05:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:05:14,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:05:14,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497465041] [2021-11-03 22:05:14,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497465041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:05:14,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:05:14,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:05:14,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866091647] [2021-11-03 22:05:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:05:14,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:05:14,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:05:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:05:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:05:14,912 INFO L87 Difference]: Start difference. First operand has 129 states, 120 states have (on average 1.425) internal successors, (171), 128 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:16,995 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:05:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:05:17,923 INFO L93 Difference]: Finished difference Result 254 states and 337 transitions. [2021-11-03 22:05:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:05:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-03 22:05:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:05:17,933 INFO L225 Difference]: With dead ends: 254 [2021-11-03 22:05:17,933 INFO L226 Difference]: Without dead ends: 122 [2021-11-03 22:05:17,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:05:17,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2672.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2951.80ms IncrementalHoareTripleChecker+Time [2021-11-03 22:05:17,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 156 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 2951.80ms Time] [2021-11-03 22:05:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-03 22:05:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-03 22:05:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 114 states have (on average 1.280701754385965) internal successors, (146), 121 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:17,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2021-11-03 22:05:17,973 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 29 [2021-11-03 22:05:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:05:17,973 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2021-11-03 22:05:17,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2021-11-03 22:05:17,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 22:05:17,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:17,975 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] [2021-11-03 22:05:17,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:05:17,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1554920762, now seen corresponding path program 1 times [2021-11-03 22:05:17,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:17,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038726970] [2021-11-03 22:05:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:17,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:05:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:05:18,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:05:18,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038726970] [2021-11-03 22:05:18,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038726970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:05:18,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:05:18,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 22:05:18,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089950044] [2021-11-03 22:05:18,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:05:18,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 22:05:18,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:05:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 22:05:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 22:05:18,206 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:20,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:05:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:05:21,682 INFO L93 Difference]: Finished difference Result 231 states and 277 transitions. [2021-11-03 22:05:21,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 22:05:21,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-03 22:05:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:05:21,688 INFO L225 Difference]: With dead ends: 231 [2021-11-03 22:05:21,688 INFO L226 Difference]: Without dead ends: 123 [2021-11-03 22:05:21,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.94ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 22:05:21,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2984.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3435.32ms IncrementalHoareTripleChecker+Time [2021-11-03 22:05:21,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [0 Valid, 289 Invalid, 1 Unknown, 0 Unchecked, 3435.32ms Time] [2021-11-03 22:05:21,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-03 22:05:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-03 22:05:21,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 122 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2021-11-03 22:05:21,699 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 29 [2021-11-03 22:05:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:05:21,699 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2021-11-03 22:05:21,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2021-11-03 22:05:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 22:05:21,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:21,700 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] [2021-11-03 22:05:21,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:05:21,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:21,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1420907256, now seen corresponding path program 1 times [2021-11-03 22:05:21,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:21,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315299723] [2021-11-03 22:05:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:05:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:05:21,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:05:21,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315299723] [2021-11-03 22:05:21,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315299723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:05:21,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:05:21,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:05:21,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928368379] [2021-11-03 22:05:21,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:05:21,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:05:21,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:05:21,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:05:21,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:05:21,956 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:24,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:05:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:05:25,047 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2021-11-03 22:05:25,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:05:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2021-11-03 22:05:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:05:25,049 INFO L225 Difference]: With dead ends: 214 [2021-11-03 22:05:25,049 INFO L226 Difference]: Without dead ends: 123 [2021-11-03 22:05:25,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:05:25,052 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2780.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3036.56ms IncrementalHoareTripleChecker+Time [2021-11-03 22:05:25,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 210 Unknown, 0 Unchecked, 5.85ms Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 1 Unknown, 0 Unchecked, 3036.56ms Time] [2021-11-03 22:05:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-03 22:05:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-03 22:05:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 122 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-11-03 22:05:25,065 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 29 [2021-11-03 22:05:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:05:25,065 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-11-03 22:05:25,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:25,066 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-11-03 22:05:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-03 22:05:25,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:25,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:05:25,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:05:25,067 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1590978580, now seen corresponding path program 1 times [2021-11-03 22:05:25,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:25,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031417666] [2021-11-03 22:05:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:25,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:25,152 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 22:05:25,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224516378] [2021-11-03 22:05:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:25,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:05:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:05:25,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 22:05:25,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 22:05:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:05:25,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 22:05:25,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:05:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:05:26,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 22:05:26,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:05:26,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031417666] [2021-11-03 22:05:26,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 22:05:26,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224516378] [2021-11-03 22:05:26,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224516378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:05:26,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:05:26,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:05:26,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906842705] [2021-11-03 22:05:26,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:05:26,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:05:26,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:05:26,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:05:26,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:05:26,434 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:28,491 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 [] [2021-11-03 22:05:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:05:29,666 INFO L93 Difference]: Finished difference Result 189 states and 219 transitions. [2021-11-03 22:05:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:05:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-03 22:05:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:05:29,668 INFO L225 Difference]: With dead ends: 189 [2021-11-03 22:05:29,668 INFO L226 Difference]: Without dead ends: 123 [2021-11-03 22:05:29,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 208.91ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:05:29,670 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 460 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2784.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3086.27ms IncrementalHoareTripleChecker+Time [2021-11-03 22:05:29,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 0 Invalid, 219 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 3086.27ms Time] [2021-11-03 22:05:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-03 22:05:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-03 22:05:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 122 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2021-11-03 22:05:29,687 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 37 [2021-11-03 22:05:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:05:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2021-11-03 22:05:29,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2021-11-03 22:05:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 22:05:29,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:29,691 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] [2021-11-03 22:05:29,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 22:05:29,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:05:29,908 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:29,908 INFO L85 PathProgramCache]: Analyzing trace with hash -62529738, now seen corresponding path program 1 times [2021-11-03 22:05:29,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:29,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698789673] [2021-11-03 22:05:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:29,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:30,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 22:05:30,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40694882] [2021-11-03 22:05:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:30,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:05:30,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:05:30,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 22:05:30,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 22:05:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:05:30,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 2588 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 22:05:30,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:05:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:05:30,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 22:05:30,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:05:30,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698789673] [2021-11-03 22:05:30,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 22:05:30,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40694882] [2021-11-03 22:05:30,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40694882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:05:30,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:05:30,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:05:30,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939997442] [2021-11-03 22:05:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:05:30,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:05:30,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:05:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:05:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:05:30,967 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:33,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:05:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:05:34,615 INFO L93 Difference]: Finished difference Result 235 states and 276 transitions. [2021-11-03 22:05:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:05:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-03 22:05:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:05:34,617 INFO L225 Difference]: With dead ends: 235 [2021-11-03 22:05:34,617 INFO L226 Difference]: Without dead ends: 143 [2021-11-03 22:05:34,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:05:34,618 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3305.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.89ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3595.56ms IncrementalHoareTripleChecker+Time [2021-11-03 22:05:34,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 3.89ms Time], IncrementalHoareTripleChecker [13 Valid, 437 Invalid, 1 Unknown, 0 Unchecked, 3595.56ms Time] [2021-11-03 22:05:34,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-03 22:05:34,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 131. [2021-11-03 22:05:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2021-11-03 22:05:34,627 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 53 [2021-11-03 22:05:34,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:05:34,627 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2021-11-03 22:05:34,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:05:34,628 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2021-11-03 22:05:34,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 22:05:34,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:05:34,629 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] [2021-11-03 22:05:34,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 22:05:34,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:05:34,843 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-03 22:05:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:05:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1837537100, now seen corresponding path program 1 times [2021-11-03 22:05:34,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:05:34,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80506881] [2021-11-03 22:05:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:34,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:05:34,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 22:05:34,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639032089] [2021-11-03 22:05:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:05:34,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:05:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:05:34,929 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 22:05:34,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 22:09:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:09:33,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 204 conjunts are in the unsatisfiable core [2021-11-03 22:09:33,182 INFO L286 TraceCheckSpWp]: Computing forward predicates...