./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:00:19,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:00:19,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:00:19,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:00:19,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:00:19,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:00:19,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:00:19,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:00:19,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:00:19,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:00:19,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:00:19,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:00:19,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:00:19,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:00:19,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:00:19,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:00:19,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:00:19,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:00:19,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:00:20,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:00:20,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:00:20,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:00:20,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:00:20,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:00:20,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:00:20,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:00:20,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:00:20,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:00:20,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:00:20,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:00:20,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:00:20,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:00:20,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:00:20,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:00:20,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:00:20,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:00:20,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:00:20,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:00:20,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:00:20,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:00:20,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:00:20,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:00:20,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:00:20,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:00:20,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:00:20,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:00:20,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:00:20,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:00:20,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:00:20,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:00:20,062 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:00:20,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:00:20,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:00:20,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:00:20,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:00:20,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:00:20,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:00:20,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:00:20,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:00:20,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:00:20,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:00:20,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:00:20,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:00:20,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:00:20,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:00:20,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:00:20,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:00:20,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:00:20,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2021-12-14 17:00:20,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:00:20,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:00:20,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:00:20,334 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:00:20,334 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:00:20,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-12-14 17:00:20,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c19f7bce1/422fea5e183e48628fd23f9f33e8ff1b/FLAG75bc1907a [2021-12-14 17:00:20,920 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:00:20,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2021-12-14 17:00:20,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c19f7bce1/422fea5e183e48628fd23f9f33e8ff1b/FLAG75bc1907a [2021-12-14 17:00:21,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c19f7bce1/422fea5e183e48628fd23f9f33e8ff1b [2021-12-14 17:00:21,115 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:00:21,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:00:21,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:00:21,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:00:21,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:00:21,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:00:21" (1/1) ... [2021-12-14 17:00:21,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c77afa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:21, skipping insertion in model container [2021-12-14 17:00:21,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:00:21" (1/1) ... [2021-12-14 17:00:21,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:00:21,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:00:21,438 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-12-14 17:00:21,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-12-14 17:00:21,937 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:00:21,996 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:21,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:21,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:21,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:21,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,006 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,007 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,007 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,008 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,009 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,161 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:00:22,162 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:00:22,163 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:00:22,163 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:00:22,164 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:00:22,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:00:22,165 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:00:22,168 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:00:22,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:00:22,169 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:00:22,232 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:00:22,345 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:00:22,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2021-12-14 17:00:22,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2021-12-14 17:00:22,441 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-14 17:00:22,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,463 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,464 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,464 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,464 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-14 17:00:22,516 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-14 17:00:22,518 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-14 17:00:22,518 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-14 17:00:22,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-14 17:00:22,519 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-14 17:00:22,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-14 17:00:22,520 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-14 17:00:22,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-14 17:00:22,521 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-14 17:00:22,556 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,559 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-14 17:00:22,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:00:22,700 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:00:22,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22 WrapperNode [2021-12-14 17:00:22,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:00:22,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:00:22,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:00:22,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:00:22,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,842 INFO L137 Inliner]: procedures = 690, calls = 1715, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 681 [2021-12-14 17:00:22,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:00:22,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:00:22,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:00:22,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:00:22,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:00:22,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:00:22,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:00:22,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:00:22,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (1/1) ... [2021-12-14 17:00:22,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:00:22,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:22,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 17:00:23,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 17:00:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:00:23,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-14 17:00:23,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-14 17:00:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-14 17:00:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-14 17:00:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-14 17:00:23,033 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-14 17:00:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:00:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-14 17:00:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-14 17:00:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 17:00:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 17:00:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:00:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:00:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-14 17:00:23,035 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-14 17:00:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:00:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:00:23,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:00:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-14 17:00:23,035 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-14 17:00:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-14 17:00:23,036 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-14 17:00:23,036 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-14 17:00:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-14 17:00:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:00:23,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:00:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:00:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:00:23,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:00:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-14 17:00:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-14 17:00:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-14 17:00:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-14 17:00:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:00:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2021-12-14 17:00:23,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2021-12-14 17:00:23,038 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-14 17:00:23,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-14 17:00:23,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:00:23,313 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:00:23,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:00:24,209 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:00:24,213 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:00:24,214 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:00:24,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:00:24 BoogieIcfgContainer [2021-12-14 17:00:24,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:00:24,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:00:24,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:00:24,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:00:24,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:00:21" (1/3) ... [2021-12-14 17:00:24,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23249b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:00:24, skipping insertion in model container [2021-12-14 17:00:24,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:00:22" (2/3) ... [2021-12-14 17:00:24,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23249b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:00:24, skipping insertion in model container [2021-12-14 17:00:24,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:00:24" (3/3) ... [2021-12-14 17:00:24,220 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2021-12-14 17:00:24,223 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:00:24,223 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:00:24,250 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:00:24,254 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 17:00:24,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:00:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-14 17:00:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-14 17:00:24,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:24,294 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:24,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -853348587, now seen corresponding path program 1 times [2021-12-14 17:00:24,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:24,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769117171] [2021-12-14 17:00:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:24,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:00:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:00:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:00:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:00:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:00:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:00:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:00:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:00:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:00:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:00:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:00:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:00:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:00:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:00:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:00:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:00:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:00:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:00:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:00:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:00:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:00:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:00:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:00:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:00:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:00:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 17:00:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:00:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:00:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:00:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-14 17:00:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:25,001 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-12-14 17:00:25,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:00:25,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769117171] [2021-12-14 17:00:25,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769117171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:00:25,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:00:25,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:00:25,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210834258] [2021-12-14 17:00:25,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:00:25,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:00:25,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:00:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:00:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:00:25,023 INFO L87 Difference]: Start difference. First operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:00:26,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:00:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:00:26,947 INFO L93 Difference]: Finished difference Result 332 states and 486 transitions. [2021-12-14 17:00:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:00:26,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 174 [2021-12-14 17:00:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:00:26,956 INFO L225 Difference]: With dead ends: 332 [2021-12-14 17:00:26,956 INFO L226 Difference]: Without dead ends: 171 [2021-12-14 17:00:26,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:00:26,961 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 66 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:00:26,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 286 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 17:00:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-14 17:00:26,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2021-12-14 17:00:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-14 17:00:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2021-12-14 17:00:26,996 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 174 [2021-12-14 17:00:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:00:26,996 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2021-12-14 17:00:26,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-14 17:00:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2021-12-14 17:00:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-14 17:00:26,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:26,999 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:26,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:00:27,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 179931383, now seen corresponding path program 1 times [2021-12-14 17:00:27,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524344616] [2021-12-14 17:00:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:27,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:00:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 17:00:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 17:00:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:00:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:00:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:00:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-14 17:00:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 17:00:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:00:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:00:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:00:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 17:00:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-14 17:00:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:00:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:00:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:00:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:00:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 17:00:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:00:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:00:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-14 17:00:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 17:00:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-14 17:00:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 17:00:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-14 17:00:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-14 17:00:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-14 17:00:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-14 17:00:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-14 17:00:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-14 17:00:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2021-12-14 17:00:27,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:00:27,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524344616] [2021-12-14 17:00:27,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524344616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:00:27,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094423420] [2021-12-14 17:00:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:27,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:27,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:27,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:00:27,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:00:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:27,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:00:27,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:00:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2021-12-14 17:00:28,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:00:28,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094423420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:00:28,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:00:28,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-14 17:00:28,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039695420] [2021-12-14 17:00:28,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:00:28,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:00:28,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:00:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:00:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:00:28,006 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:00:29,661 INFO L93 Difference]: Finished difference Result 305 states and 406 transitions. [2021-12-14 17:00:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:00:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 174 [2021-12-14 17:00:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:00:29,664 INFO L225 Difference]: With dead ends: 305 [2021-12-14 17:00:29,664 INFO L226 Difference]: Without dead ends: 157 [2021-12-14 17:00:29,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:00:29,665 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 194 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:00:29,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 570 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 17:00:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-14 17:00:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-14 17:00:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2021-12-14 17:00:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 211 transitions. [2021-12-14 17:00:29,692 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 211 transitions. Word has length 174 [2021-12-14 17:00:29,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:00:29,693 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 211 transitions. [2021-12-14 17:00:29,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 211 transitions. [2021-12-14 17:00:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-14 17:00:29,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:29,695 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:29,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-14 17:00:29,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:29,915 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:29,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash 432837413, now seen corresponding path program 1 times [2021-12-14 17:00:29,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:29,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728090687] [2021-12-14 17:00:29,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:29,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:00:29,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572818738] [2021-12-14 17:00:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:29,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:30,076 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:00:30,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:00:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:30,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 17:00:30,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:00:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-14 17:00:30,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:00:30,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:00:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728090687] [2021-12-14 17:00:30,851 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:00:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572818738] [2021-12-14 17:00:30,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572818738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:00:30,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:00:30,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:00:30,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133071798] [2021-12-14 17:00:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:00:30,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:00:30,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:00:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:00:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:00:30,853 INFO L87 Difference]: Start difference. First operand 157 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:32,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:00:33,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:00:33,395 INFO L93 Difference]: Finished difference Result 270 states and 364 transitions. [2021-12-14 17:00:33,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:00:33,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 189 [2021-12-14 17:00:33,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:00:33,398 INFO L225 Difference]: With dead ends: 270 [2021-12-14 17:00:33,398 INFO L226 Difference]: Without dead ends: 157 [2021-12-14 17:00:33,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:00:33,399 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 192 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:00:33,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 570 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 17:00:33,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-14 17:00:33,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-14 17:00:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2021-12-14 17:00:33,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2021-12-14 17:00:33,429 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 189 [2021-12-14 17:00:33,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:00:33,431 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2021-12-14 17:00:33,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2021-12-14 17:00:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-14 17:00:33,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:33,437 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:33,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:00:33,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 17:00:33,653 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 229772645, now seen corresponding path program 2 times [2021-12-14 17:00:33,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:33,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14548685] [2021-12-14 17:00:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:33,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:33,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:00:33,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371252543] [2021-12-14 17:00:33,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:00:33,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:33,727 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:00:33,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:00:34,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:00:34,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:00:34,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 17:00:34,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:00:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2021-12-14 17:00:35,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:00:35,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:00:35,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14548685] [2021-12-14 17:00:35,220 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:00:35,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371252543] [2021-12-14 17:00:35,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371252543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:00:35,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:00:35,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:00:35,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735735902] [2021-12-14 17:00:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:00:35,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:00:35,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:00:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:00:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:00:35,224 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:36,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:00:36,487 INFO L93 Difference]: Finished difference Result 239 states and 315 transitions. [2021-12-14 17:00:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:00:36,491 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 204 [2021-12-14 17:00:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:00:36,492 INFO L225 Difference]: With dead ends: 239 [2021-12-14 17:00:36,492 INFO L226 Difference]: Without dead ends: 157 [2021-12-14 17:00:36,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:00:36,493 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 190 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:00:36,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 707 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:00:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-14 17:00:36,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-14 17:00:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2021-12-14 17:00:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2021-12-14 17:00:36,522 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 204 [2021-12-14 17:00:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:00:36,523 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2021-12-14 17:00:36,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-14 17:00:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2021-12-14 17:00:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-14 17:00:36,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:36,525 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:36,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 17:00:36,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:36,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1913799685, now seen corresponding path program 3 times [2021-12-14 17:00:36,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759360274] [2021-12-14 17:00:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:36,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:36,790 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:00:36,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900206147] [2021-12-14 17:00:36,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 17:00:36,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:36,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:36,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:00:36,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:00:40,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-14 17:00:40,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:00:40,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 17:00:40,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:00:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-12-14 17:00:41,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:00:41,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:00:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759360274] [2021-12-14 17:00:41,236 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 17:00:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900206147] [2021-12-14 17:00:41,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900206147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:00:41,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:00:41,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:00:41,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478962936] [2021-12-14 17:00:41,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:00:41,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:00:41,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:00:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:00:41,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:00:41,239 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-14 17:00:41,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:00:41,753 INFO L93 Difference]: Finished difference Result 232 states and 303 transitions. [2021-12-14 17:00:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:00:41,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 234 [2021-12-14 17:00:41,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:00:41,765 INFO L225 Difference]: With dead ends: 232 [2021-12-14 17:00:41,765 INFO L226 Difference]: Without dead ends: 157 [2021-12-14 17:00:41,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:00:41,766 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 2 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:00:41,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 881 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:00:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-14 17:00:41,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-14 17:00:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2021-12-14 17:00:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2021-12-14 17:00:41,782 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 234 [2021-12-14 17:00:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:00:41,783 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2021-12-14 17:00:41,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2021-12-14 17:00:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2021-12-14 17:00:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-14 17:00:41,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:00:41,799 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:00:41,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-14 17:00:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:42,015 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:00:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:00:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1463432363, now seen corresponding path program 1 times [2021-12-14 17:00:42,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:00:42,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535952970] [2021-12-14 17:00:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:42,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:00:42,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 17:00:42,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166458464] [2021-12-14 17:00:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:00:42,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:00:42,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:00:42,087 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) [2021-12-14 17:00:42,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:00:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:00:57,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 375 conjunts are in the unsatisfiable core [2021-12-14 17:00:57,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:00:57,098 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-14 17:00:57,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-14 17:00:57,430 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 17:00:57,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 55 [2021-12-14 17:00:57,797 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-14 17:00:57,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2021-12-14 17:00:58,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-14 17:00:58,559 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-14 17:00:58,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2021-12-14 17:00:59,467 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-14 17:00:59,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-14 17:00:59,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 treesize of output 6 [2021-12-14 17:00:59,727 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-12-14 17:00:59,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2021-12-14 17:00:59,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 treesize of output 6 [2021-12-14 17:01:00,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 17:01:00,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-14 17:01:00,935 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-14 17:01:00,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-14 17:01:07,757 INFO L354 Elim1Store]: treesize reduction 174, result has 25.0 percent of original size [2021-12-14 17:01:07,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 47 treesize of output 85 [2021-12-14 17:01:07,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-14 17:01:21,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:21,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:21,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:21,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-14 17:01:21,382 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-12-14 17:01:21,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 94 [2021-12-14 17:01:21,495 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-12-14 17:01:21,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 32 [2021-12-14 17:01:28,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:01:28,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 51 [2021-12-14 17:01:28,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-12-14 17:01:28,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 42