./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_get_at_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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:13:43,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:13:43,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:13:43,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:13:43,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:13:43,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:13:43,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:13:43,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:13:43,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:13:43,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:13:43,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:13:43,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:13:43,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:13:43,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:13:43,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:13:43,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:13:43,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:13:43,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:13:43,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:13:43,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:13:43,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:13:43,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:13:43,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:13:43,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:13:43,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:13:43,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:13:43,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:13:43,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:13:43,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:13:43,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:13:43,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:13:43,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:13:43,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:13:43,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:13:43,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:13:43,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:13:43,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:13:43,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:13:43,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:13:43,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:13:43,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:13:43,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:13:43,702 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:13:43,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:13:43,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:13:43,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:13:43,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:13:43,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:13:43,704 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:13:43,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:13:43,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:13:43,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:13:43,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:13:43,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:13:43,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:13:43,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:13:43,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:13:43,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:13:43,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:13:43,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:13:43,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2021-11-02 12:13:43,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:13:43,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:13:43,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:13:43,917 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:13:43,918 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:13:43,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-11-02 12:13:43,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1fcdc9d/415c49681fa646fbb99d6e35de8b9b55/FLAGa5a0a7b5c [2021-11-02 12:13:44,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:13:44,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-11-02 12:13:44,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1fcdc9d/415c49681fa646fbb99d6e35de8b9b55/FLAGa5a0a7b5c [2021-11-02 12:13:44,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d1fcdc9d/415c49681fa646fbb99d6e35de8b9b55 [2021-11-02 12:13:44,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:13:44,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:13:44,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:13:44,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:13:44,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:13:44,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:13:44" (1/1) ... [2021-11-02 12:13:44,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74def098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:44, skipping insertion in model container [2021-11-02 12:13:44,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:13:44" (1/1) ... [2021-11-02 12:13:44,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:13:44,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:13:45,057 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2021-11-02 12:13:45,065 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2021-11-02 12:13:45,077 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:13:45,081 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:13:45,537 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:13:45,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,594 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,603 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,610 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,841 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:13:45,842 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:13:45,843 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:13:45,847 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:13:45,848 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:13:45,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:13:45,849 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:13:45,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:13:45,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:13:45,852 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:13:45,940 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:45,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:13:46,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:13:46,031 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4495,4508] [2021-11-02 12:13:46,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i[4555,4568] [2021-11-02 12:13:46,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:13:46,036 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:13:46,057 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:13:46,080 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,084 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,085 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,090 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,119 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:13:46,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:13:46,121 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:13:46,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:13:46,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:13:46,122 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:13:46,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:13:46,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:13:46,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:13:46,124 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:13:46,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,161 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,162 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:13:46,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:13:46,346 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:13:46,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46 WrapperNode [2021-11-02 12:13:46,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:13:46,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:13:46,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:13:46,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:13:46,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:13:46,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:13:46,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:13:46,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:13:46,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:13:46,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:13:46,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:13:46,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:13:46,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (1/1) ... [2021-11-02 12:13:46,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:13:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:13:46,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 12:13:46,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 12:13:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:13:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:13:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:13:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:13:46,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:13:46,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:13:46,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:13:50,770 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:13:50,770 INFO L299 CfgBuilder]: Removed 197 assume(true) statements. [2021-11-02 12:13:50,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:13:50 BoogieIcfgContainer [2021-11-02 12:13:50,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:13:50,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:13:50,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:13:50,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:13:50,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:13:44" (1/3) ... [2021-11-02 12:13:50,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81cbc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:13:50, skipping insertion in model container [2021-11-02 12:13:50,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:13:46" (2/3) ... [2021-11-02 12:13:50,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81cbc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:13:50, skipping insertion in model container [2021-11-02 12:13:50,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:13:50" (3/3) ... [2021-11-02 12:13:50,783 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2021-11-02 12:13:50,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:13:50,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-02 12:13:50,833 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:13:50,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 12:13:50,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-02 12:13:50,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 226 states have (on average 1.420353982300885) internal successors, (321), 238 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:50,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 12:13:50,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:13:50,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:13:50,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:13:50,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:13:50,867 INFO L85 PathProgramCache]: Analyzing trace with hash 949117531, now seen corresponding path program 1 times [2021-11-02 12:13:50,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:13:50,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231435185] [2021-11-02 12:13:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:13:50,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:13:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:13:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:13:51,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:13:51,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231435185] [2021-11-02 12:13:51,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231435185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:13:51,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:13:51,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:13:51,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830787056] [2021-11-02 12:13:51,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:13:51,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:13:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:13:51,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:13:51,392 INFO L87 Difference]: Start difference. First operand has 239 states, 226 states have (on average 1.420353982300885) internal successors, (321), 238 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:53,477 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:13:54,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:13:54,854 INFO L93 Difference]: Finished difference Result 474 states and 637 transitions. [2021-11-02 12:13:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:13:54,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 12:13:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:13:54,871 INFO L225 Difference]: With dead ends: 474 [2021-11-02 12:13:54,871 INFO L226 Difference]: Without dead ends: 232 [2021-11-02 12:13:54,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:13:54,876 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2988.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3401.65ms IncrementalHoareTripleChecker+Time [2021-11-02 12:13:54,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 292 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 1 Unknown, 0 Unchecked, 3401.65ms Time] [2021-11-02 12:13:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-02 12:13:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-02 12:13:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 231 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2021-11-02 12:13:54,917 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 51 [2021-11-02 12:13:54,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:13:54,918 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2021-11-02 12:13:54,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:54,918 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2021-11-02 12:13:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 12:13:54,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:13:54,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:13:54,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:13:54,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:13:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:13:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1385000845, now seen corresponding path program 1 times [2021-11-02 12:13:54,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:13:54,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824941926] [2021-11-02 12:13:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:13:54,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:13:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:13:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:13:55,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:13:55,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824941926] [2021-11-02 12:13:55,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824941926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:13:55,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:13:55,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 12:13:55,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847896970] [2021-11-02 12:13:55,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 12:13:55,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:13:55,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 12:13:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:13:55,129 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:57,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:13:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:13:58,922 INFO L93 Difference]: Finished difference Result 451 states and 549 transitions. [2021-11-02 12:13:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 12:13:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 12:13:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:13:58,924 INFO L225 Difference]: With dead ends: 451 [2021-11-02 12:13:58,925 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 12:13:58,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 12:13:58,926 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3450.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3749.35ms IncrementalHoareTripleChecker+Time [2021-11-02 12:13:58,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 562 Unknown, 0 Unchecked, 6.56ms Time], IncrementalHoareTripleChecker [0 Valid, 561 Invalid, 1 Unknown, 0 Unchecked, 3749.35ms Time] [2021-11-02 12:13:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 12:13:58,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 12:13:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.2805429864253393) internal successors, (283), 232 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 283 transitions. [2021-11-02 12:13:58,955 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 283 transitions. Word has length 51 [2021-11-02 12:13:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:13:58,956 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 283 transitions. [2021-11-02 12:13:58,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:13:58,956 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 283 transitions. [2021-11-02 12:13:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 12:13:58,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:13:58,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:13:58,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:13:58,963 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:13:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:13:58,963 INFO L85 PathProgramCache]: Analyzing trace with hash -543271857, now seen corresponding path program 1 times [2021-11-02 12:13:58,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:13:58,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50442190] [2021-11-02 12:13:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:13:58,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:13:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:13:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:13:59,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:13:59,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50442190] [2021-11-02 12:13:59,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50442190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:13:59,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:13:59,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:13:59,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041502880] [2021-11-02 12:13:59,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:13:59,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:13:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:13:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:13:59,179 INFO L87 Difference]: Start difference. First operand 233 states and 283 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:01,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:14:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:14:03,061 INFO L93 Difference]: Finished difference Result 434 states and 526 transitions. [2021-11-02 12:14:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:14:03,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 12:14:03,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:14:03,076 INFO L225 Difference]: With dead ends: 434 [2021-11-02 12:14:03,076 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 12:14:03,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:14:03,081 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 401 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3348.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.89ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3779.02ms IncrementalHoareTripleChecker+Time [2021-11-02 12:14:03,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 0 Invalid, 424 Unknown, 0 Unchecked, 9.89ms Time], IncrementalHoareTripleChecker [8 Valid, 415 Invalid, 1 Unknown, 0 Unchecked, 3779.02ms Time] [2021-11-02 12:14:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 12:14:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 12:14:03,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.262443438914027) internal successors, (279), 232 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 279 transitions. [2021-11-02 12:14:03,091 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 279 transitions. Word has length 51 [2021-11-02 12:14:03,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:14:03,091 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 279 transitions. [2021-11-02 12:14:03,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:03,092 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 279 transitions. [2021-11-02 12:14:03,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-02 12:14:03,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:14:03,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:14:03,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:14:03,093 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:14:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:14:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1050760955, now seen corresponding path program 1 times [2021-11-02 12:14:03,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:14:03,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020132026] [2021-11-02 12:14:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:03,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:14:03,148 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:14:03,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298764819] [2021-11-02 12:14:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:03,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:03,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:14:03,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:14:03,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 12:14:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:14:03,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 12:14:03,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:14:04,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:14:04,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:14:04,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:14:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020132026] [2021-11-02 12:14:04,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:14:04,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298764819] [2021-11-02 12:14:04,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298764819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:14:04,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:14:04,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:14:04,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095567705] [2021-11-02 12:14:04,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:14:04,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:14:04,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:14:04,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:14:04,588 INFO L87 Difference]: Start difference. First operand 233 states and 279 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:06,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:14:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:14:08,746 INFO L93 Difference]: Finished difference Result 360 states and 427 transitions. [2021-11-02 12:14:08,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:14:08,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-02 12:14:08,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:14:08,747 INFO L225 Difference]: With dead ends: 360 [2021-11-02 12:14:08,747 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 12:14:08,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 267.59ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:14:08,753 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1065 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3465.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.59ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3943.46ms IncrementalHoareTripleChecker+Time [2021-11-02 12:14:08,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 9.59ms Time], IncrementalHoareTripleChecker [33 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 3943.46ms Time] [2021-11-02 12:14:08,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 12:14:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 12:14:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.244343891402715) internal successors, (275), 232 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 275 transitions. [2021-11-02 12:14:08,776 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 275 transitions. Word has length 75 [2021-11-02 12:14:08,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:14:08,778 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 275 transitions. [2021-11-02 12:14:08,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 275 transitions. [2021-11-02 12:14:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:14:08,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:14:08,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:14:08,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 12:14:08,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:08,996 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:14:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:14:08,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1119345469, now seen corresponding path program 1 times [2021-11-02 12:14:08,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:14:08,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434372413] [2021-11-02 12:14:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:08,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:14:09,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:14:09,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609244682] [2021-11-02 12:14:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:09,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:09,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:14:09,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:14:09,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 12:14:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:14:09,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 12:14:09,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:14:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:14:10,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:14:10,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:14:10,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434372413] [2021-11-02 12:14:10,376 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:14:10,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609244682] [2021-11-02 12:14:10,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609244682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:14:10,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:14:10,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:14:10,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969126576] [2021-11-02 12:14:10,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:14:10,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:14:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:14:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:14:10,378 INFO L87 Difference]: Start difference. First operand 233 states and 275 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:12,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:14:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:14:17,775 INFO L93 Difference]: Finished difference Result 594 states and 698 transitions. [2021-11-02 12:14:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:14:17,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:14:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:14:17,777 INFO L225 Difference]: With dead ends: 594 [2021-11-02 12:14:17,777 INFO L226 Difference]: Without dead ends: 427 [2021-11-02 12:14:17,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 211.40ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:14:17,778 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6515.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.78ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7165.20ms IncrementalHoareTripleChecker+Time [2021-11-02 12:14:17,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 1373 Unknown, 0 Unchecked, 18.78ms Time], IncrementalHoareTripleChecker [3 Valid, 1369 Invalid, 1 Unknown, 0 Unchecked, 7165.20ms Time] [2021-11-02 12:14:17,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-02 12:14:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 257. [2021-11-02 12:14:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 245 states have (on average 1.2408163265306122) internal successors, (304), 256 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2021-11-02 12:14:17,788 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 91 [2021-11-02 12:14:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:14:17,788 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2021-11-02 12:14:17,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2021-11-02 12:14:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:14:17,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:14:17,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:14:17,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 12:14:17,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:17,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:14:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:14:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 819816577, now seen corresponding path program 1 times [2021-11-02 12:14:17,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:14:17,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840191304] [2021-11-02 12:14:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:17,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:14:18,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:14:18,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714643149] [2021-11-02 12:14:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:18,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:14:18,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 12:14:18,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 12:14:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:14:18,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 12:14:18,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:14:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:14:19,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:14:19,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:14:19,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840191304] [2021-11-02 12:14:19,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:14:19,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714643149] [2021-11-02 12:14:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714643149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:14:19,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:14:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:14:19,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831790466] [2021-11-02 12:14:19,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:14:19,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:14:19,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:14:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:14:19,453 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:21,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:14:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:14:25,924 INFO L93 Difference]: Finished difference Result 574 states and 672 transitions. [2021-11-02 12:14:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:14:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:14:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:14:25,927 INFO L225 Difference]: With dead ends: 574 [2021-11-02 12:14:25,927 INFO L226 Difference]: Without dead ends: 427 [2021-11-02 12:14:25,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 311.29ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:14:25,928 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 381 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5657.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.27ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6215.46ms IncrementalHoareTripleChecker+Time [2021-11-02 12:14:25,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 0 Invalid, 1368 Unknown, 0 Unchecked, 17.27ms Time], IncrementalHoareTripleChecker [3 Valid, 1364 Invalid, 1 Unknown, 0 Unchecked, 6215.46ms Time] [2021-11-02 12:14:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-02 12:14:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 277. [2021-11-02 12:14:25,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 265 states have (on average 1.2377358490566037) internal successors, (328), 276 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 328 transitions. [2021-11-02 12:14:25,941 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 328 transitions. Word has length 91 [2021-11-02 12:14:25,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:14:25,943 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 328 transitions. [2021-11-02 12:14:25,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 328 transitions. [2021-11-02 12:14:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 12:14:25,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:14:25,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:14:25,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 12:14:26,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:26,166 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:14:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:14:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1094576191, now seen corresponding path program 1 times [2021-11-02 12:14:26,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:14:26,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895630979] [2021-11-02 12:14:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:26,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:14:26,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:14:26,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748717222] [2021-11-02 12:14:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:26,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:14:26,299 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) [2021-11-02 12:14:26,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 12:14:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:14:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 12:14:26,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 12:14:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:14:27,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 12:14:27,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:14:27,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895630979] [2021-11-02 12:14:27,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 12:14:27,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748717222] [2021-11-02 12:14:27,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748717222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:14:27,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:14:27,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:14:27,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535475659] [2021-11-02 12:14:27,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:14:27,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:14:27,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:14:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:14:27,248 INFO L87 Difference]: Start difference. First operand 277 states and 328 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:29,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:14:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:14:32,588 INFO L93 Difference]: Finished difference Result 424 states and 498 transitions. [2021-11-02 12:14:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:14:32,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 12:14:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:14:32,590 INFO L225 Difference]: With dead ends: 424 [2021-11-02 12:14:32,590 INFO L226 Difference]: Without dead ends: 233 [2021-11-02 12:14:32,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:14:32,591 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4580.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5262.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:14:32,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 819 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [0 Valid, 818 Invalid, 1 Unknown, 0 Unchecked, 5262.52ms Time] [2021-11-02 12:14:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-02 12:14:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-02 12:14:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 232 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2021-11-02 12:14:32,598 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 91 [2021-11-02 12:14:32,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:14:32,599 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2021-11-02 12:14:32,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:14:32,599 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2021-11-02 12:14:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:14:32,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:14:32,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:14:32,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 12:14:32,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:32,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 12:14:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:14:32,804 INFO L85 PathProgramCache]: Analyzing trace with hash -553423599, now seen corresponding path program 1 times [2021-11-02 12:14:32,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:14:32,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389542157] [2021-11-02 12:14:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:32,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:14:32,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 12:14:32,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330861416] [2021-11-02 12:14:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:14:32,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 12:14:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:14:32,855 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) [2021-11-02 12:14:32,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15