./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:45:24,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:45:24,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:45:24,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:45:24,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:45:24,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:45:24,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:45:24,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:45:24,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:45:24,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:45:24,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:45:24,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:45:24,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:45:24,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:45:24,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:45:24,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:45:24,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:45:24,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:45:24,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:45:24,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:45:24,746 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:45:24,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:45:24,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:45:24,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:45:24,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:45:24,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:45:24,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:45:24,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:45:24,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:45:24,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:45:24,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:45:24,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:45:24,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:45:24,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:45:24,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:45:24,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:45:24,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:45:24,757 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:45:24,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:45:24,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:45:24,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:45:24,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:45:24,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:45:24,788 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:45:24,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:45:24,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:45:24,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:45:24,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:45:24,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:45:24,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:45:24,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:45:24,791 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:45:24,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:45:24,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:45:24,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:45:24,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:45:24,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:45:24,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:45:24,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:45:24,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:45:24,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:45:24,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:45:24,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:45:24,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2022-07-21 09:45:25,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:45:25,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:45:25,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:45:25,097 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:45:25,098 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:45:25,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-21 09:45:25,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67020ca96/4903f14afe594afca0ba876c469f3fdd/FLAG123ebb9d6 [2022-07-21 09:45:25,716 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:45:25,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-21 09:45:25,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67020ca96/4903f14afe594afca0ba876c469f3fdd/FLAG123ebb9d6 [2022-07-21 09:45:26,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67020ca96/4903f14afe594afca0ba876c469f3fdd [2022-07-21 09:45:26,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:45:26,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:45:26,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:45:26,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:45:26,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:45:26,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:45:26" (1/1) ... [2022-07-21 09:45:26,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc8596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:26, skipping insertion in model container [2022-07-21 09:45:26,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:45:26" (1/1) ... [2022-07-21 09:45:26,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:45:26,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:45:26,502 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_linked_list_end_harness.i[4493,4506] [2022-07-21 09:45:26,506 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_linked_list_end_harness.i[4553,4566] [2022-07-21 09:45:26,998 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,006 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,007 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,008 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,015 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,018 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,019 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,019 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,020 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,020 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,218 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:45:27,220 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:45:27,221 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:45:27,222 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:45:27,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:45:27,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:45:27,223 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:45:27,224 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:45:27,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:45:27,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:45:27,307 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:45:27,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:45:27,331 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:45:27,339 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_linked_list_end_harness.i[4493,4506] [2022-07-21 09:45:27,340 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_linked_list_end_harness.i[4553,4566] [2022-07-21 09:45:27,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,374 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,379 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,380 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,381 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,381 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,381 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,382 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:27,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:45:27,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:45:27,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:45:27,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:45:27,408 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:45:27,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:45:27,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:45:27,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:45:27,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:45:27,414 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:45:27,426 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:45:27,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:45:27,593 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:45:27,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27 WrapperNode [2022-07-21 09:45:27,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:45:27,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:45:27,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:45:27,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:45:27,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,747 INFO L137 Inliner]: procedures = 679, calls = 1040, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 136 [2022-07-21 09:45:27,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:45:27,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:45:27,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:45:27,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:45:27,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:45:27,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:45:27,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:45:27,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:45:27,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (1/1) ... [2022-07-21 09:45:27,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:45:27,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:27,861 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) [2022-07-21 09:45:27,929 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 [2022-07-21 09:45:27,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:45:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:45:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:45:27,942 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2022-07-21 09:45:27,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2022-07-21 09:45:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:45:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2022-07-21 09:45:27,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2022-07-21 09:45:27,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:45:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:45:27,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:45:27,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:45:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:45:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:45:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:45:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:45:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:45:27,945 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-21 09:45:27,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-21 09:45:27,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:45:28,084 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:45:28,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:45:28,332 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:45:28,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:45:28,337 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 09:45:28,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:45:28 BoogieIcfgContainer [2022-07-21 09:45:28,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:45:28,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:45:28,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:45:28,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:45:28,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:45:26" (1/3) ... [2022-07-21 09:45:28,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7518da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:45:28, skipping insertion in model container [2022-07-21 09:45:28,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:27" (2/3) ... [2022-07-21 09:45:28,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e7518da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:45:28, skipping insertion in model container [2022-07-21 09:45:28,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:45:28" (3/3) ... [2022-07-21 09:45:28,344 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_end_harness.i [2022-07-21 09:45:28,360 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:45:28,361 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:45:28,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:45:28,427 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@7a87b394, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bfb8e1d [2022-07-21 09:45:28,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:45:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-21 09:45:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:45:28,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:28,445 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:28,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2107862704, now seen corresponding path program 1 times [2022-07-21 09:45:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048390868] [2022-07-21 09:45:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:45:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:45:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:45:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:45:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 09:45:28,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048390868] [2022-07-21 09:45:28,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048390868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:28,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:45:28,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:45:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099264795] [2022-07-21 09:45:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:28,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:45:28,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:45:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:45:28,958 INFO L87 Difference]: Start difference. First operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 49 states have internal predecessors, (65), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:28,978 INFO L93 Difference]: Finished difference Result 128 states and 184 transitions. [2022-07-21 09:45:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:45:28,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-21 09:45:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:28,985 INFO L225 Difference]: With dead ends: 128 [2022-07-21 09:45:28,985 INFO L226 Difference]: Without dead ends: 63 [2022-07-21 09:45:28,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:45:28,990 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:28,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:45:29,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-21 09:45:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-21 09:45:29,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-21 09:45:29,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2022-07-21 09:45:29,039 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 68 [2022-07-21 09:45:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:29,040 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2022-07-21 09:45:29,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2022-07-21 09:45:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:45:29,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:29,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:29,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:45:29,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:29,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:29,051 INFO L85 PathProgramCache]: Analyzing trace with hash 900796622, now seen corresponding path program 1 times [2022-07-21 09:45:29,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:29,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762757723] [2022-07-21 09:45:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:29,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:45:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:45:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:45:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:45:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:45:29,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:29,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762757723] [2022-07-21 09:45:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762757723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:29,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554550236] [2022-07-21 09:45:29,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:29,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:29,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:29,334 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) [2022-07-21 09:45:29,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:45:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:29,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-21 09:45:29,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:29,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 09:45:29,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2022-07-21 09:45:29,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-07-21 09:45:29,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:29,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2022-07-21 09:45:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:45:29,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:29,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554550236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:29,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:29,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2022-07-21 09:45:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825207875] [2022-07-21 09:45:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:29,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:45:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:45:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:45:29,897 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:45:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:29,988 INFO L93 Difference]: Finished difference Result 144 states and 195 transitions. [2022-07-21 09:45:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:45:29,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-07-21 09:45:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:29,991 INFO L225 Difference]: With dead ends: 144 [2022-07-21 09:45:29,992 INFO L226 Difference]: Without dead ends: 93 [2022-07-21 09:45:29,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:45:29,993 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 32 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:29,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 276 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-07-21 09:45:29,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-21 09:45:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2022-07-21 09:45:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 60 states have internal predecessors, (77), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 12 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-21 09:45:30,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 105 transitions. [2022-07-21 09:45:30,003 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 105 transitions. Word has length 68 [2022-07-21 09:45:30,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:30,004 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 105 transitions. [2022-07-21 09:45:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:45:30,004 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 105 transitions. [2022-07-21 09:45:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:45:30,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:30,005 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:45:30,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:30,223 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 [2022-07-21 09:45:30,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:30,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1148591220, now seen corresponding path program 1 times [2022-07-21 09:45:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:30,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985006391] [2022-07-21 09:45:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:45:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:45:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:45:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:45:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 09:45:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985006391] [2022-07-21 09:45:30,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985006391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386179872] [2022-07-21 09:45:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:30,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:30,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:30,436 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) [2022-07-21 09:45:30,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:45:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:30,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-21 09:45:30,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:30,614 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:30,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:30,625 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:30,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 09:45:31,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:45:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:45:31,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386179872] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:45:31,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:45:31,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 12] total 28 [2022-07-21 09:45:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180867667] [2022-07-21 09:45:31,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:45:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 09:45:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 09:45:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-07-21 09:45:31,833 INFO L87 Difference]: Start difference. First operand 79 states and 105 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-21 09:45:33,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:33,225 INFO L93 Difference]: Finished difference Result 246 states and 404 transitions. [2022-07-21 09:45:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-21 09:45:33,226 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) Word has length 68 [2022-07-21 09:45:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:33,229 INFO L225 Difference]: With dead ends: 246 [2022-07-21 09:45:33,229 INFO L226 Difference]: Without dead ends: 192 [2022-07-21 09:45:33,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=439, Invalid=3221, Unknown=0, NotChecked=0, Total=3660 [2022-07-21 09:45:33,232 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 255 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:33,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1560 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1087 Invalid, 0 Unknown, 373 Unchecked, 0.6s Time] [2022-07-21 09:45:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-21 09:45:33,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-07-21 09:45:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.375) internal successors, (143), 110 states have internal predecessors, (143), 22 states have call successors, (22), 8 states have call predecessors, (22), 12 states have return successors, (43), 20 states have call predecessors, (43), 21 states have call successors, (43) [2022-07-21 09:45:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 208 transitions. [2022-07-21 09:45:33,250 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 208 transitions. Word has length 68 [2022-07-21 09:45:33,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:33,250 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 208 transitions. [2022-07-21 09:45:33,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 9 states have call successors, (19), 3 states have call predecessors, (19), 7 states have return successors, (19), 8 states have call predecessors, (19), 9 states have call successors, (19) [2022-07-21 09:45:33,251 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 208 transitions. [2022-07-21 09:45:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-21 09:45:33,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:33,253 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:45:33,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:33,466 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 [2022-07-21 09:45:33,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash 577933322, now seen corresponding path program 1 times [2022-07-21 09:45:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014201799] [2022-07-21 09:45:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:33,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 09:45:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:45:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:45:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 09:45:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:45:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014201799] [2022-07-21 09:45:33,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014201799] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:33,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256772680] [2022-07-21 09:45:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:33,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:33,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:33,620 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) [2022-07-21 09:45:33,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:45:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:33,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 09:45:33,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:45:33,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:33,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256772680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:33,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:33,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-21 09:45:33,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314241328] [2022-07-21 09:45:33,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:45:33,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:45:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:45:33,794 INFO L87 Difference]: Start difference. First operand 139 states and 208 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:33,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:33,914 INFO L93 Difference]: Finished difference Result 259 states and 395 transitions. [2022-07-21 09:45:33,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:45:33,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-21 09:45:33,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:33,917 INFO L225 Difference]: With dead ends: 259 [2022-07-21 09:45:33,917 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 09:45:33,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:45:33,918 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 105 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:33,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 239 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:45:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 09:45:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2022-07-21 09:45:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 116 states have internal predecessors, (147), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-21 09:45:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 218 transitions. [2022-07-21 09:45:33,934 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 218 transitions. Word has length 70 [2022-07-21 09:45:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 218 transitions. [2022-07-21 09:45:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 218 transitions. [2022-07-21 09:45:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 09:45:33,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:33,937 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:45:33,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:34,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:34,155 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -34807881, now seen corresponding path program 1 times [2022-07-21 09:45:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:34,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137485304] [2022-07-21 09:45:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:45:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:45:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:45:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 09:45:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 09:45:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:34,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137485304] [2022-07-21 09:45:34,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137485304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:34,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883096980] [2022-07-21 09:45:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:34,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:34,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:34,267 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) [2022-07-21 09:45:34,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:45:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:45:34,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:45:34,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:34,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883096980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:34,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:34,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-21 09:45:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700711489] [2022-07-21 09:45:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:34,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:45:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:45:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:45:34,480 INFO L87 Difference]: Start difference. First operand 145 states and 218 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:34,672 INFO L93 Difference]: Finished difference Result 299 states and 464 transitions. [2022-07-21 09:45:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:45:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 09:45:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:34,675 INFO L225 Difference]: With dead ends: 299 [2022-07-21 09:45:34,675 INFO L226 Difference]: Without dead ends: 184 [2022-07-21 09:45:34,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:45:34,677 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 142 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:34,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 279 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:45:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-21 09:45:34,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 149. [2022-07-21 09:45:34,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 120 states have internal predecessors, (153), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-21 09:45:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2022-07-21 09:45:34,704 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 72 [2022-07-21 09:45:34,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:34,704 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2022-07-21 09:45:34,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:34,704 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2022-07-21 09:45:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 09:45:34,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:34,706 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:45:34,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:34,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash 387052583, now seen corresponding path program 1 times [2022-07-21 09:45:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:34,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576638820] [2022-07-21 09:45:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:34,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:45:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:45:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:45:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:45:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:45:35,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576638820] [2022-07-21 09:45:35,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576638820] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:35,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231459458] [2022-07-21 09:45:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:35,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:35,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:35,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:35,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:45:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 09:45:35,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:45:35,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:35,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231459458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:35,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:35,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-21 09:45:35,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359359985] [2022-07-21 09:45:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:35,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:45:35,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:35,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:45:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:45:35,201 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:35,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:35,222 INFO L93 Difference]: Finished difference Result 294 states and 468 transitions. [2022-07-21 09:45:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:45:35,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-21 09:45:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:35,226 INFO L225 Difference]: With dead ends: 294 [2022-07-21 09:45:35,226 INFO L226 Difference]: Without dead ends: 175 [2022-07-21 09:45:35,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:45:35,228 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:35,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:45:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-21 09:45:35,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 151. [2022-07-21 09:45:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 114 states have (on average 1.3508771929824561) internal successors, (154), 122 states have internal predecessors, (154), 22 states have call successors, (22), 8 states have call predecessors, (22), 14 states have return successors, (49), 20 states have call predecessors, (49), 21 states have call successors, (49) [2022-07-21 09:45:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 225 transitions. [2022-07-21 09:45:35,245 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 225 transitions. Word has length 73 [2022-07-21 09:45:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:35,246 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 225 transitions. [2022-07-21 09:45:35,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 09:45:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 225 transitions. [2022-07-21 09:45:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:45:35,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:35,247 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:45:35,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:35,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash -186702901, now seen corresponding path program 1 times [2022-07-21 09:45:35,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:35,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52351663] [2022-07-21 09:45:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:35,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:45:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:45:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:45:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:45:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:45:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:45:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:45:35,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:35,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52351663] [2022-07-21 09:45:35,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52351663] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:35,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634122739] [2022-07-21 09:45:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:35,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:35,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:45:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:35,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-21 09:45:35,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:35,793 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:35,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:35,821 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:35,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 09:45:36,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:45:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:45:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634122739] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:45:36,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:45:36,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 10] total 27 [2022-07-21 09:45:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608716263] [2022-07-21 09:45:36,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:45:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 09:45:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 09:45:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-07-21 09:45:36,872 INFO L87 Difference]: Start difference. First operand 151 states and 225 transitions. Second operand has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:45:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:37,483 INFO L93 Difference]: Finished difference Result 342 states and 517 transitions. [2022-07-21 09:45:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 09:45:37,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 83 [2022-07-21 09:45:37,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:37,486 INFO L225 Difference]: With dead ends: 342 [2022-07-21 09:45:37,486 INFO L226 Difference]: Without dead ends: 221 [2022-07-21 09:45:37,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 161 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=244, Invalid=1826, Unknown=0, NotChecked=0, Total=2070 [2022-07-21 09:45:37,487 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 100 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:37,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1337 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 608 Invalid, 0 Unknown, 116 Unchecked, 0.3s Time] [2022-07-21 09:45:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-21 09:45:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 175. [2022-07-21 09:45:37,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 134 states have (on average 1.3507462686567164) internal successors, (181), 144 states have internal predecessors, (181), 22 states have call successors, (22), 10 states have call predecessors, (22), 18 states have return successors, (54), 20 states have call predecessors, (54), 21 states have call successors, (54) [2022-07-21 09:45:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 257 transitions. [2022-07-21 09:45:37,498 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 257 transitions. Word has length 83 [2022-07-21 09:45:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:37,498 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 257 transitions. [2022-07-21 09:45:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.653846153846154) internal successors, (121), 24 states have internal predecessors, (121), 10 states have call successors, (22), 4 states have call predecessors, (22), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:45:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 257 transitions. [2022-07-21 09:45:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 09:45:37,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:37,507 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:37,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:37,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1220157194, now seen corresponding path program 1 times [2022-07-21 09:45:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:37,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046396681] [2022-07-21 09:45:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:45:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:45:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:45:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 09:45:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:45:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:45:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:45:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046396681] [2022-07-21 09:45:37,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046396681] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:37,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481364013] [2022-07-21 09:45:37,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:37,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:37,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:37,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:45:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:38,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-21 09:45:38,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:38,088 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:38,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:38,102 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:45:38,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-21 09:45:38,960 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1| Int) (|v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.base_BEFORE_CALL_1|) |v_aws_linked_list_is_valid_aws_linked_list_is_valid_deep_~temp~0#1.offset_BEFORE_CALL_1|) 0)))) is different from true [2022-07-21 09:45:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 09:45:39,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:45:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:45:39,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481364013] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:45:39,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:45:39,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8] total 18 [2022-07-21 09:45:39,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147331045] [2022-07-21 09:45:39,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:45:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 09:45:39,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 09:45:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2022-07-21 09:45:39,157 INFO L87 Difference]: Start difference. First operand 175 states and 257 transitions. Second operand has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:45:39,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:39,556 INFO L93 Difference]: Finished difference Result 572 states and 935 transitions. [2022-07-21 09:45:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:45:39,556 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 85 [2022-07-21 09:45:39,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:39,559 INFO L225 Difference]: With dead ends: 572 [2022-07-21 09:45:39,559 INFO L226 Difference]: Without dead ends: 431 [2022-07-21 09:45:39,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2022-07-21 09:45:39,560 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 201 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:39,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 639 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 486 Invalid, 0 Unknown, 174 Unchecked, 0.2s Time] [2022-07-21 09:45:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-21 09:45:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 230. [2022-07-21 09:45:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 195 states have internal predecessors, (256), 25 states have call successors, (25), 11 states have call predecessors, (25), 19 states have return successors, (60), 23 states have call predecessors, (60), 24 states have call successors, (60) [2022-07-21 09:45:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 341 transitions. [2022-07-21 09:45:39,578 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 341 transitions. Word has length 85 [2022-07-21 09:45:39,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:39,578 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 341 transitions. [2022-07-21 09:45:39,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.166666666666667) internal successors, (93), 18 states have internal predecessors, (93), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:45:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 341 transitions. [2022-07-21 09:45:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:45:39,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:39,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:39,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:39,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:39,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1281472374, now seen corresponding path program 1 times [2022-07-21 09:45:39,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:39,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967741669] [2022-07-21 09:45:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:39,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:45:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:45:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:45:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:45:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:45:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 09:45:39,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:39,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967741669] [2022-07-21 09:45:39,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967741669] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:39,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978044760] [2022-07-21 09:45:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:39,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:39,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:39,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:39,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:45:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:45:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:40,027 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 09:45:40,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:40,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978044760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:40,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:40,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-21 09:45:40,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427867295] [2022-07-21 09:45:40,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:45:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:40,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:45:40,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:45:40,029 INFO L87 Difference]: Start difference. First operand 230 states and 341 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:45:40,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:40,053 INFO L93 Difference]: Finished difference Result 410 states and 647 transitions. [2022-07-21 09:45:40,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:45:40,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-21 09:45:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:40,055 INFO L225 Difference]: With dead ends: 410 [2022-07-21 09:45:40,055 INFO L226 Difference]: Without dead ends: 218 [2022-07-21 09:45:40,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:45:40,057 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 8 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 244 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:45:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-21 09:45:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 215. [2022-07-21 09:45:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 180 states have internal predecessors, (229), 25 states have call successors, (25), 11 states have call predecessors, (25), 19 states have return successors, (60), 23 states have call predecessors, (60), 24 states have call successors, (60) [2022-07-21 09:45:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 314 transitions. [2022-07-21 09:45:40,069 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 314 transitions. Word has length 83 [2022-07-21 09:45:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:40,069 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 314 transitions. [2022-07-21 09:45:40,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:45:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 314 transitions. [2022-07-21 09:45:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 09:45:40,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:40,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:40,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 09:45:40,289 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1051920264, now seen corresponding path program 1 times [2022-07-21 09:45:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732022443] [2022-07-21 09:45:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 09:45:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:45:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 09:45:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:45:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:45:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 09:45:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:45:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732022443] [2022-07-21 09:45:40,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732022443] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187615935] [2022-07-21 09:45:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:40,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:40,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:40,460 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:40,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:45:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 09:45:40,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 09:45:40,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:45:40,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187615935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:45:40,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:45:40,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-21 09:45:40,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745793460] [2022-07-21 09:45:40,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:45:40,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:45:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:45:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:45:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:45:40,590 INFO L87 Difference]: Start difference. First operand 215 states and 314 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:45:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:45:40,608 INFO L93 Difference]: Finished difference Result 323 states and 488 transitions. [2022-07-21 09:45:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:45:40,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 83 [2022-07-21 09:45:40,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:45:40,609 INFO L225 Difference]: With dead ends: 323 [2022-07-21 09:45:40,609 INFO L226 Difference]: Without dead ends: 136 [2022-07-21 09:45:40,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:45:40,611 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 2 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:45:40,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 235 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:45:40,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-21 09:45:40,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2022-07-21 09:45:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 104 states have internal predecessors, (121), 17 states have call successors, (17), 9 states have call predecessors, (17), 13 states have return successors, (29), 15 states have call predecessors, (29), 16 states have call successors, (29) [2022-07-21 09:45:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2022-07-21 09:45:40,617 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 83 [2022-07-21 09:45:40,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:45:40,618 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2022-07-21 09:45:40,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:45:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2022-07-21 09:45:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 09:45:40,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:45:40,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:45:40,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:40,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 09:45:40,836 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:45:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:45:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 806524548, now seen corresponding path program 1 times [2022-07-21 09:45:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:45:40,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837915625] [2022-07-21 09:45:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:45:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:45:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:45:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 09:45:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 09:45:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 09:45:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:45:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 09:45:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:45:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 09:45:40,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:45:40,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837915625] [2022-07-21 09:45:40,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837915625] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:45:40,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66676437] [2022-07-21 09:45:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:45:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:45:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:45:40,980 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 09:45:41,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:45:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:45:41,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-21 09:45:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:45:41,228 INFO L390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 09:45:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:45:41,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-21 09:45:41,281 INFO L356 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-07-21 09:45:41,282 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 09:45:41,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:45:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 09:45:41,500 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 09:45:41,503 INFO L158 Benchmark]: Toolchain (without parser) took 15320.06ms. Allocated memory was 54.5MB in the beginning and 234.9MB in the end (delta: 180.4MB). Free memory was 35.9MB in the beginning and 134.5MB in the end (delta: -98.5MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1408.13ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 35.8MB in the beginning and 41.2MB in the end (delta: -5.4MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.40ms. Allocated memory is still 81.8MB. Free memory was 41.2MB in the beginning and 36.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: Boogie Preprocessor took 49.34ms. Allocated memory is still 81.8MB. Free memory was 36.0MB in the beginning and 33.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: RCFGBuilder took 540.85ms. Allocated memory is still 81.8MB. Free memory was 33.2MB in the beginning and 30.4MB in the end (delta: 2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,504 INFO L158 Benchmark]: TraceAbstraction took 13163.80ms. Allocated memory was 81.8MB in the beginning and 234.9MB in the end (delta: 153.1MB). Free memory was 30.1MB in the beginning and 134.5MB in the end (delta: -104.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2022-07-21 09:45:41,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 54.5MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1408.13ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 35.8MB in the beginning and 41.2MB in the end (delta: -5.4MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 151.40ms. Allocated memory is still 81.8MB. Free memory was 41.2MB in the beginning and 36.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.34ms. Allocated memory is still 81.8MB. Free memory was 36.0MB in the beginning and 33.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.85ms. Allocated memory is still 81.8MB. Free memory was 33.2MB in the beginning and 30.4MB in the end (delta: 2.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 13163.80ms. Allocated memory was 81.8MB in the beginning and 234.9MB in the end (delta: 153.1MB). Free memory was 30.1MB in the beginning and 134.5MB in the end (delta: -104.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_33| input size 44 context size 44 output size 44: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 09:45:41,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:45:43,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:45:43,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:45:43,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:45:43,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:45:43,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:45:43,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:45:43,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:45:43,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:45:43,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:45:43,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:45:43,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:45:43,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:45:43,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:45:43,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:45:43,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:45:43,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:45:43,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:45:43,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:45:43,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:45:43,317 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:45:43,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:45:43,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:45:43,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:45:43,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:45:43,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:45:43,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:45:43,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:45:43,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:45:43,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:45:43,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:45:43,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:45:43,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:45:43,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:45:43,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:45:43,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:45:43,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:45:43,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:45:43,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:45:43,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:45:43,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:45:43,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:45:43,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 09:45:43,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:45:43,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:45:43,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:45:43,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:45:43,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:45:43,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:45:43,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:45:43,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:45:43,362 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:45:43,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:45:43,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:45:43,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:45:43,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:45:43,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:45:43,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:45:43,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:45:43,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:45:43,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:45:43,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:45:43,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:45:43,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:45:43,375 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 09:45:43,375 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 09:45:43,375 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:45:43,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:45:43,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:45:43,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 09:45:43,376 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a49fa15b0860d2357f9ad3c8c6bab1d80cf83a6734355dc0b05c55121c837273 [2022-07-21 09:45:43,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:45:43,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:45:43,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:45:43,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:45:43,686 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:45:43,687 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-21 09:45:43,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c4fac9/81db8d40360c4beeb1c5beb69a579ef9/FLAGb19a54a2c [2022-07-21 09:45:44,338 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:45:44,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_end_harness.i [2022-07-21 09:45:44,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c4fac9/81db8d40360c4beeb1c5beb69a579ef9/FLAGb19a54a2c [2022-07-21 09:45:44,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313c4fac9/81db8d40360c4beeb1c5beb69a579ef9 [2022-07-21 09:45:44,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:45:44,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:45:44,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:45:44,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:45:44,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:45:44,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:45:44" (1/1) ... [2022-07-21 09:45:44,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ebb3db2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:45:44, skipping insertion in model container [2022-07-21 09:45:44,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:45:44" (1/1) ... [2022-07-21 09:45:44,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:45:44,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:45:45,027 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_linked_list_end_harness.i[4493,4506] [2022-07-21 09:45:45,031 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_linked_list_end_harness.i[4553,4566] [2022-07-21 09:45:45,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,588 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,589 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,592 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,593 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,595 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,596 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,597 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,597 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:45:45,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:45:45,792 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:45:45,792 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:45:45,793 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:45:45,794 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:45:45,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:45:45,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:45:45,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:45:45,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:45:45,797 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:45:45,894 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:45:45,904 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 09:45:45,909 INFO L158 Benchmark]: Toolchain (without parser) took 1139.62ms. Allocated memory was 52.4MB in the beginning and 77.6MB in the end (delta: 25.2MB). Free memory was 25.2MB in the beginning and 49.5MB in the end (delta: -24.3MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2022-07-21 09:45:45,909 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 09:45:45,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1136.25ms. Allocated memory was 52.4MB in the beginning and 77.6MB in the end (delta: 25.2MB). Free memory was 24.9MB in the beginning and 49.5MB in the end (delta: -24.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2022-07-21 09:45:45,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1136.25ms. Allocated memory was 52.4MB in the beginning and 77.6MB in the end (delta: 25.2MB). Free memory was 24.9MB in the beginning and 49.5MB in the end (delta: -24.6MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range