./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_back_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 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:46:53,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:46:53,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:46:53,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:46:53,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:46:53,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:46:53,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:46:53,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:46:53,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:46:53,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:46:53,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:46:53,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:46:53,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:46:53,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:46:53,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:46:53,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:46:53,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:46:53,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:46:53,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:46:53,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:46:53,149 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:46:53,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:46:53,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:46:53,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:46:53,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:46:53,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:46:53,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:46:53,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:46:53,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:46:53,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:46:53,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:46:53,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:46:53,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:46:53,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:46:53,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:46:53,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:46:53,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:46:53,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:46:53,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:46:53,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:46:53,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:46:53,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:46:53,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:46:53,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:46:53,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:46:53,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:46:53,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:46:53,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:46:53,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:46:53,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:46:53,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:46:53,194 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:46:53,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:46:53,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:46:53,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:46:53,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:46:53,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:46:53,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:46:53,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:46:53,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:46:53,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:46:53,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:46:53,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:46:53,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:46:53,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:46:53,198 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:46:53,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:46:53,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:46:53,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2022-07-12 10:46:53,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:46:53,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:46:53,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:46:53,427 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:46:53,428 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:46:53,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-07-12 10:46:53,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218fb5042/e24330ae49f1423796829c13c6c26b01/FLAG5812f0aa9 [2022-07-12 10:46:54,054 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:46:54,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-07-12 10:46:54,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218fb5042/e24330ae49f1423796829c13c6c26b01/FLAG5812f0aa9 [2022-07-12 10:46:54,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/218fb5042/e24330ae49f1423796829c13c6c26b01 [2022-07-12 10:46:54,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:46:54,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:46:54,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:46:54,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:46:54,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:46:54,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:46:54" (1/1) ... [2022-07-12 10:46:54,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ed4752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:54, skipping insertion in model container [2022-07-12 10:46:54,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:46:54" (1/1) ... [2022-07-12 10:46:54,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:46:54,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:46:54,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-07-12 10:46:54,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-07-12 10:46:55,396 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:46:55,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,452 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,452 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,458 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,459 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,460 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,461 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,790 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:46:55,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:46:55,792 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:46:55,793 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:46:55,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:46:55,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:46:55,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:46:55,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:46:55,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:46:55,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:46:55,957 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:55,963 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:46:56,041 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:46:56,058 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-07-12 10:46:56,059 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-07-12 10:46:56,090 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:46:56,106 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,107 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,107 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,108 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,108 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:46:56,136 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:46:56,137 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:46:56,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:46:56,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:46:56,138 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:46:56,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:46:56,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:46:56,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:46:56,139 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:46:56,166 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:46:56,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:46:56,364 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:46:56,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56 WrapperNode [2022-07-12 10:46:56,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:46:56,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:46:56,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:46:56,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:46:56,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,470 INFO L137 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 656 [2022-07-12 10:46:56,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:46:56,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:46:56,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:46:56,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:46:56,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:46:56,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:46:56,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:46:56,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:46:56,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (1/1) ... [2022-07-12 10:46:56,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:46:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:46:56,568 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) [2022-07-12 10:46:56,584 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 [2022-07-12 10:46:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:46:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 10:46:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 10:46:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 10:46:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 10:46:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:46:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:46:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:46:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:46:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:46:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:46:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:46:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:46:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:46:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:46:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:46:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:46:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:46:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:46:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:46:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:46:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:46:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:46:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 10:46:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 10:46:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 10:46:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 10:46:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-12 10:46:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-12 10:46:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:46:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:46:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:46:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:46:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:46:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:46:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:46:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:46:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:46:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 10:46:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 10:46:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:46:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:46:56,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 10:46:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:46:56,850 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:46:56,851 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:46:57,373 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:46:57,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:46:57,379 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:46:57,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:46:57 BoogieIcfgContainer [2022-07-12 10:46:57,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:46:57,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:46:57,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:46:57,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:46:57,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:46:54" (1/3) ... [2022-07-12 10:46:57,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aab6807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:46:57, skipping insertion in model container [2022-07-12 10:46:57,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:46:56" (2/3) ... [2022-07-12 10:46:57,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aab6807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:46:57, skipping insertion in model container [2022-07-12 10:46:57,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:46:57" (3/3) ... [2022-07-12 10:46:57,386 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2022-07-12 10:46:57,395 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:46:57,395 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:46:57,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:46:57,430 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6eeb220d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1b9ac814 [2022-07-12 10:46:57,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:46:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-12 10:46:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:46:57,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:46:57,443 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:46:57,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:46:57,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:46:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1489749117, now seen corresponding path program 1 times [2022-07-12 10:46:57,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:46:57,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738419729] [2022-07-12 10:46:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:46:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:46:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:46:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:46:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:46:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:46:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:46:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:46:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:46:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:46:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:46:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:46:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:46:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:46:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:46:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:46:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:46:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:46:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:46:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:46:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:46:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:46:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,147 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-12 10:46:58,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:46:58,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738419729] [2022-07-12 10:46:58,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738419729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:46:58,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:46:58,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:46:58,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130959575] [2022-07-12 10:46:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:46:58,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:46:58,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:46:58,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:46:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:46:58,177 INFO L87 Difference]: Start difference. First operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 10:46:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:46:58,530 INFO L93 Difference]: Finished difference Result 374 states and 541 transitions. [2022-07-12 10:46:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:46:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-07-12 10:46:58,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:46:58,539 INFO L225 Difference]: With dead ends: 374 [2022-07-12 10:46:58,539 INFO L226 Difference]: Without dead ends: 192 [2022-07-12 10:46:58,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:46:58,545 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 114 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:46:58,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 285 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:46:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-12 10:46:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2022-07-12 10:46:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-12 10:46:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-07-12 10:46:58,585 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 124 [2022-07-12 10:46:58,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:46:58,585 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-07-12 10:46:58,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 10:46:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-07-12 10:46:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-12 10:46:58,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:46:58,589 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:46:58,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:46:58,589 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:46:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:46:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1640985525, now seen corresponding path program 1 times [2022-07-12 10:46:58,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:46:58,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493091304] [2022-07-12 10:46:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:46:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:46:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:46:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:46:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:46:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:46:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:46:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 10:46:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 10:46:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 10:46:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 10:46:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:46:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:46:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 10:46:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:46:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:46:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:46:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:46:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:46:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:46:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:46:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:46:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-12 10:46:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:46:58,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493091304] [2022-07-12 10:46:58,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493091304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:46:58,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382632531] [2022-07-12 10:46:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:46:58,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:46:58,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:46:58,916 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) [2022-07-12 10:46:58,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:46:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:46:59,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:46:59,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:46:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-12 10:46:59,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:46:59,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382632531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:46:59,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:46:59,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 10:46:59,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491612971] [2022-07-12 10:46:59,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:46:59,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:46:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:46:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:46:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:46:59,374 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 10:46:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:46:59,605 INFO L93 Difference]: Finished difference Result 315 states and 417 transitions. [2022-07-12 10:46:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:46:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-07-12 10:46:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:46:59,609 INFO L225 Difference]: With dead ends: 315 [2022-07-12 10:46:59,610 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:46:59,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:46:59,612 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 232 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:46:59,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 625 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:46:59,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:46:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 10:46:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-07-12 10:46:59,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-07-12 10:46:59,650 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 124 [2022-07-12 10:46:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:46:59,651 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-07-12 10:46:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-12 10:46:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-07-12 10:46:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 10:46:59,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:46:59,655 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:46:59,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:46:59,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:46:59,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:46:59,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:46:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1623021021, now seen corresponding path program 1 times [2022-07-12 10:46:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:46:59,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887938076] [2022-07-12 10:46:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:46:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:46:59,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:46:59,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802758573] [2022-07-12 10:46:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:46:59,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:46:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:46:59,923 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) [2022-07-12 10:46:59,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:47:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:47:00,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 10:47:00,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:47:00,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:47:00,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:47:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887938076] [2022-07-12 10:47:00,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 10:47:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802758573] [2022-07-12 10:47:00,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802758573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:47:00,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:47:00,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:47:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998768157] [2022-07-12 10:47:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:47:00,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:47:00,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:47:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:47:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:47:00,374 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-12 10:47:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:47:00,589 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2022-07-12 10:47:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:47:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-07-12 10:47:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:47:00,591 INFO L225 Difference]: With dead ends: 283 [2022-07-12 10:47:00,591 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:47:00,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:47:00,592 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 249 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:47:00,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 748 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:47:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:47:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 10:47:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-07-12 10:47:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-07-12 10:47:00,616 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 154 [2022-07-12 10:47:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:47:00,617 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-07-12 10:47:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-12 10:47:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-07-12 10:47:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-12 10:47:00,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:47:00,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:47:00,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:47:00,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 10:47:00,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:47:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:47:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2016135159, now seen corresponding path program 2 times [2022-07-12 10:47:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:47:00,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763055947] [2022-07-12 10:47:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:47:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:47:00,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 10:47:00,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603434468] [2022-07-12 10:47:00,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:47:00,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:47:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:47:00,874 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) [2022-07-12 10:47:00,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:47:01,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:47:01,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:47:01,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-12 10:47:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:47:01,571 INFO L390 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 9 treesize of output 3 [2022-07-12 10:47:01,895 INFO L356 Elim1Store]: treesize reduction 120, result has 50.2 percent of original size [2022-07-12 10:47:01,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 31 select indices, 31 select index equivalence classes, 435 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 30 case distinctions, treesize of input 156 treesize of output 214