./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_pop_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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:53:50,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:53:50,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:53:50,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:53:50,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:53:50,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:53:50,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:53:50,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:53:50,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:53:50,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:53:50,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:53:50,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:53:50,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:53:50,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:53:50,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:53:50,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:53:50,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:53:50,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:53:50,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:53:50,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:53:50,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:53:50,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:53:50,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:53:50,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:53:50,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:53:50,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:53:50,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:53:50,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:53:50,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:53:50,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:53:50,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:53:50,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:53:50,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:53:50,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:53:50,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:53:50,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:53:50,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:53:50,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:53:50,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:53:50,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:53:50,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:53:50,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:53:50,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:53:50,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:53:50,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:53:50,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:53:50,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:53:50,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:53:50,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:53:50,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:53:50,623 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:53:50,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:53:50,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:53:50,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:53:50,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:53:50,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:53:50,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:53:50,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:53:50,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:53:50,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:53:50,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:53:50,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:53:50,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:53:50,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2021-12-22 13:53:50,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:53:50,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:53:50,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:53:50,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:53:50,911 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:53:50,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-22 13:53:50,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c8e6e2c/e9671991524648b98065a09bd57d0103/FLAG14067be3b [2021-12-22 13:53:51,610 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:53:51,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2021-12-22 13:53:51,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c8e6e2c/e9671991524648b98065a09bd57d0103/FLAG14067be3b [2021-12-22 13:53:52,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52c8e6e2c/e9671991524648b98065a09bd57d0103 [2021-12-22 13:53:52,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:53:52,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:53:52,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:53:52,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:53:52,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:53:52,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:53:52" (1/1) ... [2021-12-22 13:53:52,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57859f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:52, skipping insertion in model container [2021-12-22 13:53:52,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:53:52" (1/1) ... [2021-12-22 13:53:52,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:53:52,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:53:52,346 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_pop_back_harness.i[4497,4510] [2021-12-22 13:53:52,353 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_pop_back_harness.i[4557,4570] [2021-12-22 13:53:52,960 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:53:53,019 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,045 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,045 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,300 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:53:53,301 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:53:53,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:53:53,302 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:53:53,304 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:53:53,312 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:53:53,313 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:53:53,313 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:53:53,313 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:53:53,323 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:53:53,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,425 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:53:53,513 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:53:53,536 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_pop_back_harness.i[4497,4510] [2021-12-22 13:53:53,537 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_pop_back_harness.i[4557,4570] [2021-12-22 13:53:53,583 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:53:53,597 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,614 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,616 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,617 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:53:53,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:53:53,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:53:53,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:53:53,657 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:53:53,657 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:53:53,658 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:53:53,658 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:53:53,659 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:53:53,659 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:53:53,714 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,719 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:53:53,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:53:53,931 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:53:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53 WrapperNode [2021-12-22 13:53:53,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:53:53,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:53:53,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:53:53,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:53:53,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,052 INFO L137 Inliner]: procedures = 691, calls = 1700, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 616 [2021-12-22 13:53:54,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:53:54,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:53:54,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:53:54,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:53:54,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:53:54,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:53:54,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:53:54,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:53:54,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (1/1) ... [2021-12-22 13:53:54,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:53:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:53:54,189 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) [2021-12-22 13:53:54,212 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 [2021-12-22 13:53:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:53:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-22 13:53:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-22 13:53:54,229 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-22 13:53:54,229 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-22 13:53:54,230 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:53:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:53:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:53:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 13:53:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 13:53:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:53:54,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:53:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:53:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:53:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:53:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:53:54,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:53:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-22 13:53:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-22 13:53:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-22 13:53:54,233 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-22 13:53:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 13:53:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 13:53:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-22 13:53:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-22 13:53:54,234 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:53:54,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:53:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-12-22 13:53:54,235 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-12-22 13:53:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:53:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:53:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:53:54,235 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 13:53:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 13:53:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 13:53:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 13:53:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:53:54,236 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-12-22 13:53:54,236 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-12-22 13:53:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-22 13:53:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-22 13:53:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-22 13:53:54,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-22 13:53:54,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:53:54,530 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:53:54,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:53:55,310 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:53:55,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:53:55,318 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 13:53:55,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:53:55 BoogieIcfgContainer [2021-12-22 13:53:55,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:53:55,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:53:55,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:53:55,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:53:55,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:53:52" (1/3) ... [2021-12-22 13:53:55,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3842be83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:53:55, skipping insertion in model container [2021-12-22 13:53:55,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:53:53" (2/3) ... [2021-12-22 13:53:55,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3842be83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:53:55, skipping insertion in model container [2021-12-22 13:53:55,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:53:55" (3/3) ... [2021-12-22 13:53:55,327 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2021-12-22 13:53:55,331 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:53:55,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:53:55,377 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:53:55,387 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 [2021-12-22 13:53:55,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:53:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-22 13:53:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 13:53:55,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:53:55,420 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:53:55,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:53:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:53:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1276829709, now seen corresponding path program 1 times [2021-12-22 13:53:55,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:53:55,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725128293] [2021-12-22 13:53:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:53:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:53:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:53:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:53:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:53:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:53:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 13:53:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:53:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:53:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:53:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 13:53:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 13:53:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:53:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:53:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:53:56,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:53:56,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725128293] [2021-12-22 13:53:56,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725128293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:53:56,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:53:56,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 13:53:56,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127910756] [2021-12-22 13:53:56,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:53:56,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:53:56,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:53:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:53:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:53:56,168 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:53:56,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:53:56,683 INFO L93 Difference]: Finished difference Result 364 states and 532 transitions. [2021-12-22 13:53:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:53:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2021-12-22 13:53:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:53:56,694 INFO L225 Difference]: With dead ends: 364 [2021-12-22 13:53:56,694 INFO L226 Difference]: Without dead ends: 197 [2021-12-22 13:53:56,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:53:56,701 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 111 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:53:56,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 243 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 13:53:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-22 13:53:56,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 164. [2021-12-22 13:53:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-22 13:53:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2021-12-22 13:53:56,749 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2021-12-22 13:53:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:53:56,750 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2021-12-22 13:53:56,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-22 13:53:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2021-12-22 13:53:56,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 13:53:56,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:53:56,754 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:53:56,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:53:56,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:53:56,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:53:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1354789231, now seen corresponding path program 1 times [2021-12-22 13:53:56,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:53:56,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320831343] [2021-12-22 13:53:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:56,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:53:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:53:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:53:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 13:53:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 13:53:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-22 13:53:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 13:53:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-22 13:53:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-22 13:53:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 13:53:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 13:53:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 13:53:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 13:53:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 13:53:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-22 13:53:57,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:53:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320831343] [2021-12-22 13:53:57,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320831343] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 13:53:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168010718] [2021-12-22 13:53:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:57,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:53:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:53:57,072 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) [2021-12-22 13:53:57,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:53:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:57,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2131 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 13:53:57,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:53:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 13:53:57,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:53:57,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168010718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:53:57,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 13:53:57,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-22 13:53:57,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789052213] [2021-12-22 13:53:57,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:53:57,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:53:57,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:53:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:53:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-22 13:53:57,632 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-22 13:53:57,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:53:57,869 INFO L93 Difference]: Finished difference Result 293 states and 387 transitions. [2021-12-22 13:53:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:53:57,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2021-12-22 13:53:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:53:57,877 INFO L225 Difference]: With dead ends: 293 [2021-12-22 13:53:57,877 INFO L226 Difference]: Without dead ends: 166 [2021-12-22 13:53:57,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:53:57,880 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 223 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:53:57,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 639 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:53:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-22 13:53:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-22 13:53:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-22 13:53:57,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 218 transitions. [2021-12-22 13:53:57,917 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 218 transitions. Word has length 84 [2021-12-22 13:53:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:53:57,917 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 218 transitions. [2021-12-22 13:53:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-22 13:53:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 218 transitions. [2021-12-22 13:53:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-22 13:53:57,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:53:57,922 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:53:57,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:53:58,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:53:58,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:53:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:53:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1275658481, now seen corresponding path program 1 times [2021-12-22 13:53:58,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:53:58,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213892922] [2021-12-22 13:53:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:58,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:53:58,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:53:58,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420652048] [2021-12-22 13:53:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:58,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:53:58,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:53:58,201 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) [2021-12-22 13:53:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:53:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:53:58,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 13:53:58,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:53:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 13:53:58,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:53:58,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:53:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213892922] [2021-12-22 13:53:58,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:53:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420652048] [2021-12-22 13:53:58,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420652048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:53:58,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:53:58,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:53:58,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543728901] [2021-12-22 13:53:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:53:58,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:53:58,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:53:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:53:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:53:58,845 INFO L87 Difference]: Start difference. First operand 166 states and 218 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-22 13:53:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:53:59,113 INFO L93 Difference]: Finished difference Result 285 states and 376 transitions. [2021-12-22 13:53:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:53:59,113 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2021-12-22 13:53:59,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:53:59,117 INFO L225 Difference]: With dead ends: 285 [2021-12-22 13:53:59,118 INFO L226 Difference]: Without dead ends: 166 [2021-12-22 13:53:59,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:53:59,119 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 229 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 13:53:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 888 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 13:53:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-22 13:53:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-22 13:53:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 100 states have (on average 1.18) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2021-12-22 13:53:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2021-12-22 13:53:59,136 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 99 [2021-12-22 13:53:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:53:59,137 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2021-12-22 13:53:59,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-22 13:53:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2021-12-22 13:53:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-22 13:53:59,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:53:59,139 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 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] [2021-12-22 13:53:59,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:53:59,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-22 13:53:59,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:53:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:53:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash -170213077, now seen corresponding path program 2 times [2021-12-22 13:53:59,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:53:59,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264491632] [2021-12-22 13:53:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:53:59,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:53:59,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:53:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499316658] [2021-12-22 13:53:59,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 13:53:59,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:53:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:53:59,415 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) [2021-12-22 13:53:59,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 13:53:59,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 13:53:59,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 13:53:59,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 13:53:59,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:54:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-22 13:54:00,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:54:00,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:54:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264491632] [2021-12-22 13:54:00,156 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:54:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499316658] [2021-12-22 13:54:00,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499316658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:54:00,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:54:00,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 13:54:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186671222] [2021-12-22 13:54:00,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:54:00,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 13:54:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:54:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 13:54:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:54:00,158 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-22 13:54:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:54:00,528 INFO L93 Difference]: Finished difference Result 282 states and 368 transitions. [2021-12-22 13:54:00,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:54:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2021-12-22 13:54:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:54:00,531 INFO L225 Difference]: With dead ends: 282 [2021-12-22 13:54:00,531 INFO L226 Difference]: Without dead ends: 164 [2021-12-22 13:54:00,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-22 13:54:00,532 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 231 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:54:00,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 1144 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:54:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-22 13:54:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-12-22 13:54:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-22 13:54:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2021-12-22 13:54:00,542 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 114 [2021-12-22 13:54:00,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:54:00,542 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2021-12-22 13:54:00,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-22 13:54:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2021-12-22 13:54:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-22 13:54:00,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:54:00,544 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:54:00,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 13:54:00,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:54:00,772 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:54:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:54:00,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1405660739, now seen corresponding path program 1 times [2021-12-22 13:54:00,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:54:00,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586967408] [2021-12-22 13:54:00,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:00,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:54:00,825 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:54:00,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827367297] [2021-12-22 13:54:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:54:00,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:54:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:54:00,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:54:00,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 13:54:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:54:01,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 277 conjunts are in the unsatisfiable core [2021-12-22 13:54:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:54:01,441 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 13:54:01,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 13:54:02,034 INFO L353 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-12-22 13:54:02,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-12-22 13:54:02,117 INFO L353 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-22 13:54:02,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-22 13:54:02,751 INFO L353 Elim1Store]: treesize reduction 91, result has 30.0 percent of original size [2021-12-22 13:54:02,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 46 treesize of output 69 [2021-12-22 13:54:02,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-22 13:54:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:54:04,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 13:54:04,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2021-12-22 13:54:04,628 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-22 13:54:04,629 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-22 13:54:41,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 69 [2021-12-22 13:54:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 50 proven. 102 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-22 13:54:41,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 13:54:48,029 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 232] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)