./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_ring_buffer_init_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 ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 13:43:52,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 13:43:52,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 13:43:52,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 13:43:52,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 13:43:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 13:43:52,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 13:43:53,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 13:43:53,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 13:43:53,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 13:43:53,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 13:43:53,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 13:43:53,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 13:43:53,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 13:43:53,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 13:43:53,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 13:43:53,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 13:43:53,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 13:43:53,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 13:43:53,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 13:43:53,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 13:43:53,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 13:43:53,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 13:43:53,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 13:43:53,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 13:43:53,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 13:43:53,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 13:43:53,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 13:43:53,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 13:43:53,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 13:43:53,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 13:43:53,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 13:43:53,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 13:43:53,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 13:43:53,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 13:43:53,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 13:43:53,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 13:43:53,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 13:43:53,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 13:43:53,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 13:43:53,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 13:43:53,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 13:43:53,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 13:43:53,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 13:43:53,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 13:43:53,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 13:43:53,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 13:43:53,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 13:43:53,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 13:43:53,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 13:43:53,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 13:43:53,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 13:43:53,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 13:43:53,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:43:53,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 13:43:53,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 13:43:53,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 13:43:53,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 13:43:53,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 13:43:53,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 13:43:53,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 13:43:53,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 13:43:53,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 13:43:53,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccc87605c4556c18c172bc882c4bc58637928d3f75ad69e0a339ead8d6093a78 [2021-11-05 13:43:53,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 13:43:53,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 13:43:53,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 13:43:53,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 13:43:53,465 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 13:43:53,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-05 13:43:53,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264ba87c3/8b20e7e2b1d0491f9318b82e5bac08fb/FLAG7b7cf5eca [2021-11-05 13:43:54,072 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 13:43:54,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_ring_buffer_init_harness.i [2021-11-05 13:43:54,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264ba87c3/8b20e7e2b1d0491f9318b82e5bac08fb/FLAG7b7cf5eca [2021-11-05 13:43:54,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264ba87c3/8b20e7e2b1d0491f9318b82e5bac08fb [2021-11-05 13:43:54,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 13:43:54,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 13:43:54,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 13:43:54,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 13:43:54,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 13:43:54,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:43:54" (1/1) ... [2021-11-05 13:43:54,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26eb3cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:54, skipping insertion in model container [2021-11-05 13:43:54,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 01:43:54" (1/1) ... [2021-11-05 13:43:54,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 13:43:54,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 13:43:54,848 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_ring_buffer_init_harness.i[4494,4507] [2021-11-05 13:43:54,856 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_ring_buffer_init_harness.i[4554,4567] [2021-11-05 13:43:54,877 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:43:54,884 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:43:55,630 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,632 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,633 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,634 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,649 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,650 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,654 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,656 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:55,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:43:55,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:43:55,874 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:43:55,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:43:55,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:43:55,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:43:55,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:43:55,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:43:55,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:43:55,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:43:55,983 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:43:56,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:43:56,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 13:43:56,046 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_ring_buffer_init_harness.i[4494,4507] [2021-11-05 13:43:56,047 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_ring_buffer_init_harness.i[4554,4567] [2021-11-05 13:43:56,049 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 13:43:56,049 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 13:43:56,099 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,100 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,100 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,100 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 13:43:56,128 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 13:43:56,128 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 13:43:56,129 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 13:43:56,129 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 13:43:56,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 13:43:56,130 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 13:43:56,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 13:43:56,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 13:43:56,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 13:43:56,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 13:43:56,145 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 13:43:56,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 13:43:56,303 INFO L208 MainTranslator]: Completed translation [2021-11-05 13:43:56,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56 WrapperNode [2021-11-05 13:43:56,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 13:43:56,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 13:43:56,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 13:43:56,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 13:43:56,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 13:43:56,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 13:43:56,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 13:43:56,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 13:43:56,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 13:43:56,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 13:43:56,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 13:43:56,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 13:43:56,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (1/1) ... [2021-11-05 13:43:56,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 13:43:56,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:43:56,635 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) [2021-11-05 13:43:56,668 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 [2021-11-05 13:43:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure __atomic_load_n [2021-11-05 13:43:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 13:43:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 13:43:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 13:43:56,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 13:43:56,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 13:43:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 13:43:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 13:43:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 13:43:56,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 13:44:04,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 13:44:04,159 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-11-05 13:44:04,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:44:04 BoogieIcfgContainer [2021-11-05 13:44:04,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 13:44:04,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 13:44:04,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 13:44:04,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 13:44:04,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 01:43:54" (1/3) ... [2021-11-05 13:44:04,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a721086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:44:04, skipping insertion in model container [2021-11-05 13:44:04,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 01:43:56" (2/3) ... [2021-11-05 13:44:04,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a721086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 01:44:04, skipping insertion in model container [2021-11-05 13:44:04,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 01:44:04" (3/3) ... [2021-11-05 13:44:04,167 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_ring_buffer_init_harness.i [2021-11-05 13:44:04,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 13:44:04,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 13:44:04,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 13:44:04,217 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 [2021-11-05 13:44:04,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 13:44:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 128 states have (on average 1.484375) internal successors, (190), 136 states have internal predecessors, (190), 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) [2021-11-05 13:44:04,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-05 13:44:04,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:04,250 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] [2021-11-05 13:44:04,250 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:04,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:04,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1522518118, now seen corresponding path program 1 times [2021-11-05 13:44:04,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:04,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673183725] [2021-11-05 13:44:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:04,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:04,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:04,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673183725] [2021-11-05 13:44:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673183725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:04,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:04,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 13:44:04,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429207796] [2021-11-05 13:44:04,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:04,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 13:44:04,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 13:44:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:44:04,786 INFO L87 Difference]: Start difference. First operand has 137 states, 128 states have (on average 1.484375) internal successors, (190), 136 states have internal predecessors, (190), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-11-05 13:44:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:04,808 INFO L93 Difference]: Finished difference Result 270 states and 375 transitions. [2021-11-05 13:44:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 13:44:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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 35 [2021-11-05 13:44:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:04,816 INFO L225 Difference]: With dead ends: 270 [2021-11-05 13:44:04,816 INFO L226 Difference]: Without dead ends: 131 [2021-11-05 13:44:04,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 13:44:04,821 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:04,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 13:44:04,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-05 13:44:04,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-05 13:44:04,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 123 states have (on average 1.3495934959349594) internal successors, (166), 130 states have internal predecessors, (166), 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) [2021-11-05 13:44:04,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 166 transitions. [2021-11-05 13:44:04,867 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 166 transitions. Word has length 35 [2021-11-05 13:44:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:04,869 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 166 transitions. [2021-11-05 13:44:04,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-11-05 13:44:04,873 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 166 transitions. [2021-11-05 13:44:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 13:44:04,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:04,875 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] [2021-11-05 13:44:04,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 13:44:04,875 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:04,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash 547716234, now seen corresponding path program 1 times [2021-11-05 13:44:04,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:04,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760800538] [2021-11-05 13:44:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:04,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:05,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:05,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760800538] [2021-11-05 13:44:05,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760800538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:05,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:05,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 13:44:05,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051640552] [2021-11-05 13:44:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:05,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 13:44:05,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 13:44:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:44:05,272 INFO L87 Difference]: Start difference. First operand 131 states and 166 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-05 13:44:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:05,444 INFO L93 Difference]: Finished difference Result 436 states and 568 transitions. [2021-11-05 13:44:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:44:05,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2021-11-05 13:44:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:05,447 INFO L225 Difference]: With dead ends: 436 [2021-11-05 13:44:05,448 INFO L226 Difference]: Without dead ends: 336 [2021-11-05 13:44:05,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 152.66ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:44:05,450 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 405 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.74ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:05,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 773 Invalid, 20 Unknown, 0 Unchecked, 10.46ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 89.74ms Time] [2021-11-05 13:44:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-05 13:44:05,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 134. [2021-11-05 13:44:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 126 states have (on average 1.3412698412698412) internal successors, (169), 133 states have internal predecessors, (169), 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) [2021-11-05 13:44:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 169 transitions. [2021-11-05 13:44:05,465 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 169 transitions. Word has length 38 [2021-11-05 13:44:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:05,465 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 169 transitions. [2021-11-05 13:44:05,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2021-11-05 13:44:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 169 transitions. [2021-11-05 13:44:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 13:44:05,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:05,467 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] [2021-11-05 13:44:05,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 13:44:05,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:05,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:05,468 INFO L85 PathProgramCache]: Analyzing trace with hash 884959910, now seen corresponding path program 1 times [2021-11-05 13:44:05,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:05,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825993872] [2021-11-05 13:44:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:05,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:05,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:05,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825993872] [2021-11-05 13:44:05,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825993872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:05,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:05,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:44:05,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478270102] [2021-11-05 13:44:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:05,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:44:05,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:44:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:44:05,834 INFO L87 Difference]: Start difference. First operand 134 states and 169 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-05 13:44:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:05,911 INFO L93 Difference]: Finished difference Result 186 states and 236 transitions. [2021-11-05 13:44:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:44:05,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2021-11-05 13:44:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:05,914 INFO L225 Difference]: With dead ends: 186 [2021-11-05 13:44:05,914 INFO L226 Difference]: Without dead ends: 134 [2021-11-05 13:44:05,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.00ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:44:05,915 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.68ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:05,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 490 Invalid, 7 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 40.68ms Time] [2021-11-05 13:44:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-05 13:44:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-05 13:44:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 133 states have internal predecessors, (168), 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) [2021-11-05 13:44:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2021-11-05 13:44:05,921 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 40 [2021-11-05 13:44:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:05,921 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2021-11-05 13:44:05,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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) [2021-11-05 13:44:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2021-11-05 13:44:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-05 13:44:05,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:05,922 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] [2021-11-05 13:44:05,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 13:44:05,922 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:05,923 INFO L85 PathProgramCache]: Analyzing trace with hash 486736725, now seen corresponding path program 1 times [2021-11-05 13:44:05,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:05,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684316124] [2021-11-05 13:44:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:05,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:06,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:06,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684316124] [2021-11-05 13:44:06,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684316124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:06,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:06,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:44:06,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540698117] [2021-11-05 13:44:06,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:06,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:44:06,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:44:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:44:06,422 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-11-05 13:44:06,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:06,796 INFO L93 Difference]: Finished difference Result 239 states and 304 transitions. [2021-11-05 13:44:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 13:44:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-11-05 13:44:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:06,797 INFO L225 Difference]: With dead ends: 239 [2021-11-05 13:44:06,798 INFO L226 Difference]: Without dead ends: 129 [2021-11-05 13:44:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 450.24ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:44:06,799 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 12 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.84ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113.85ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:06,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 953 Invalid, 36 Unknown, 0 Unchecked, 1.84ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 113.85ms Time] [2021-11-05 13:44:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-05 13:44:06,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-05 13:44:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 121 states have (on average 1.3305785123966942) internal successors, (161), 128 states have internal predecessors, (161), 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) [2021-11-05 13:44:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2021-11-05 13:44:06,805 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 40 [2021-11-05 13:44:06,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:06,805 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2021-11-05 13:44:06,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-11-05 13:44:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2021-11-05 13:44:06,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 13:44:06,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:06,807 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] [2021-11-05 13:44:06,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 13:44:06,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -745828833, now seen corresponding path program 1 times [2021-11-05 13:44:06,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:06,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008027227] [2021-11-05 13:44:06,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:06,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:07,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:07,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008027227] [2021-11-05 13:44:07,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008027227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:07,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:07,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:44:07,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306883815] [2021-11-05 13:44:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:07,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:44:07,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:44:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:44:07,019 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-05 13:44:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:07,226 INFO L93 Difference]: Finished difference Result 203 states and 261 transitions. [2021-11-05 13:44:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:44:07,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-05 13:44:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:07,228 INFO L225 Difference]: With dead ends: 203 [2021-11-05 13:44:07,228 INFO L226 Difference]: Without dead ends: 113 [2021-11-05 13:44:07,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.51ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:44:07,229 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 171 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.69ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.71ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:07,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 189 Invalid, 61 Unknown, 0 Unchecked, 1.69ms Time], IncrementalHoareTripleChecker [25 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 170.71ms Time] [2021-11-05 13:44:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-05 13:44:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-05 13:44:07,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 112 states have internal predecessors, (141), 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) [2021-11-05 13:44:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 141 transitions. [2021-11-05 13:44:07,234 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 141 transitions. Word has length 41 [2021-11-05 13:44:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:07,234 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 141 transitions. [2021-11-05 13:44:07,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-05 13:44:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 141 transitions. [2021-11-05 13:44:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:44:07,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:07,248 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] [2021-11-05 13:44:07,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 13:44:07,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash -643702219, now seen corresponding path program 1 times [2021-11-05 13:44:07,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:07,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095965732] [2021-11-05 13:44:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:07,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:07,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:07,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095965732] [2021-11-05 13:44:07,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095965732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:07,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:07,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:44:07,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933649468] [2021-11-05 13:44:07,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:44:07,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:44:07,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:44:07,451 INFO L87 Difference]: Start difference. First operand 113 states and 141 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-05 13:44:07,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:07,589 INFO L93 Difference]: Finished difference Result 171 states and 214 transitions. [2021-11-05 13:44:07,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 13:44:07,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2021-11-05 13:44:07,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:07,591 INFO L225 Difference]: With dead ends: 171 [2021-11-05 13:44:07,591 INFO L226 Difference]: Without dead ends: 121 [2021-11-05 13:44:07,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:44:07,592 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 6 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.56ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:07,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 393 Invalid, 31 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 98.56ms Time] [2021-11-05 13:44:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-05 13:44:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-11-05 13:44:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 116 states have internal predecessors, (145), 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) [2021-11-05 13:44:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2021-11-05 13:44:07,596 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 57 [2021-11-05 13:44:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:07,596 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2021-11-05 13:44:07,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-05 13:44:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2021-11-05 13:44:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-05 13:44:07,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:07,597 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] [2021-11-05 13:44:07,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 13:44:07,597 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:07,598 INFO L85 PathProgramCache]: Analyzing trace with hash -641855177, now seen corresponding path program 1 times [2021-11-05 13:44:07,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:07,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992432554] [2021-11-05 13:44:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:07,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:07,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:07,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992432554] [2021-11-05 13:44:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992432554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:07,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:07,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:44:07,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438700077] [2021-11-05 13:44:07,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:07,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:44:07,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:07,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:44:07,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:44:07,885 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-05 13:44:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:08,027 INFO L93 Difference]: Finished difference Result 195 states and 246 transitions. [2021-11-05 13:44:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:44:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-05 13:44:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:08,028 INFO L225 Difference]: With dead ends: 195 [2021-11-05 13:44:08,028 INFO L226 Difference]: Without dead ends: 117 [2021-11-05 13:44:08,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.24ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:44:08,029 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 132.97ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:08,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 234 Invalid, 42 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 132.97ms Time] [2021-11-05 13:44:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-05 13:44:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-05 13:44:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.247787610619469) internal successors, (141), 116 states have internal predecessors, (141), 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) [2021-11-05 13:44:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2021-11-05 13:44:08,033 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 57 [2021-11-05 13:44:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:08,033 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2021-11-05 13:44:08,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-05 13:44:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2021-11-05 13:44:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-05 13:44:08,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:08,034 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] [2021-11-05 13:44:08,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 13:44:08,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1995182838, now seen corresponding path program 1 times [2021-11-05 13:44:08,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:08,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154342936] [2021-11-05 13:44:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:08,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:08,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:08,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154342936] [2021-11-05 13:44:08,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154342936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:08,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:08,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 13:44:08,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954525408] [2021-11-05 13:44:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:08,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 13:44:08,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 13:44:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 13:44:08,301 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 13:44:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:08,450 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2021-11-05 13:44:08,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 13:44:08,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-11-05 13:44:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:08,452 INFO L225 Difference]: With dead ends: 195 [2021-11-05 13:44:08,452 INFO L226 Difference]: Without dead ends: 117 [2021-11-05 13:44:08,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 13:44:08,453 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 71 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.73ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:08,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 244 Invalid, 69 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [45 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 116.73ms Time] [2021-11-05 13:44:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-05 13:44:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-05 13:44:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1415929203539823) internal successors, (129), 116 states have internal predecessors, (129), 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) [2021-11-05 13:44:08,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2021-11-05 13:44:08,456 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 59 [2021-11-05 13:44:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:08,457 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2021-11-05 13:44:08,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 13:44:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2021-11-05 13:44:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-05 13:44:08,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:08,458 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] [2021-11-05 13:44:08,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 13:44:08,458 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -714349813, now seen corresponding path program 1 times [2021-11-05 13:44:08,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:08,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10314680] [2021-11-05 13:44:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:08,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:08,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:08,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10314680] [2021-11-05 13:44:08,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10314680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:08,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:08,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:44:08,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828378144] [2021-11-05 13:44:08,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:08,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:44:08,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:44:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:44:08,779 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-05 13:44:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:09,058 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2021-11-05 13:44:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:44:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-05 13:44:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:09,059 INFO L225 Difference]: With dead ends: 167 [2021-11-05 13:44:09,059 INFO L226 Difference]: Without dead ends: 113 [2021-11-05 13:44:09,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 181.02ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:44:09,060 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 277 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 174.33ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:09,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 218 Invalid, 64 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 174.33ms Time] [2021-11-05 13:44:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-05 13:44:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-05 13:44:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.128440366972477) internal successors, (123), 112 states have internal predecessors, (123), 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) [2021-11-05 13:44:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 123 transitions. [2021-11-05 13:44:09,064 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 123 transitions. Word has length 65 [2021-11-05 13:44:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:09,065 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 123 transitions. [2021-11-05 13:44:09,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2021-11-05 13:44:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 123 transitions. [2021-11-05 13:44:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 13:44:09,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:09,066 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] [2021-11-05 13:44:09,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 13:44:09,066 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:09,066 INFO L85 PathProgramCache]: Analyzing trace with hash -869451420, now seen corresponding path program 1 times [2021-11-05 13:44:09,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:09,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211413305] [2021-11-05 13:44:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:09,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:09,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:09,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211413305] [2021-11-05 13:44:09,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211413305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:09,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:09,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 13:44:09,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985254308] [2021-11-05 13:44:09,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 13:44:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 13:44:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-05 13:44:09,962 INFO L87 Difference]: Start difference. First operand 113 states and 123 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 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) [2021-11-05 13:44:12,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:14,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:16,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:18,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:20,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:21,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:21,577 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2021-11-05 13:44:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 13:44:21,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 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 67 [2021-11-05 13:44:21,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:21,579 INFO L225 Difference]: With dead ends: 152 [2021-11-05 13:44:21,579 INFO L226 Difference]: Without dead ends: 150 [2021-11-05 13:44:21,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 818.71ms TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:44:21,581 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 810 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10565.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11069.83ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:21,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 411 Invalid, 235 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 5 Unknown, 0 Unchecked, 11069.83ms Time] [2021-11-05 13:44:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-05 13:44:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 116. [2021-11-05 13:44:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 112 states have (on average 1.125) internal successors, (126), 115 states have internal predecessors, (126), 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) [2021-11-05 13:44:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2021-11-05 13:44:21,588 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 67 [2021-11-05 13:44:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:21,588 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2021-11-05 13:44:21,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 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) [2021-11-05 13:44:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2021-11-05 13:44:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 13:44:21,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:21,590 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] [2021-11-05 13:44:21,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 13:44:21,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -867604378, now seen corresponding path program 1 times [2021-11-05 13:44:21,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:21,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293463803] [2021-11-05 13:44:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:21,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:21,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:21,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293463803] [2021-11-05 13:44:21,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293463803] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:21,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:44:21,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 13:44:21,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279673347] [2021-11-05 13:44:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:21,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 13:44:21,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 13:44:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:44:21,893 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-05 13:44:21,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:21,906 INFO L93 Difference]: Finished difference Result 221 states and 241 transitions. [2021-11-05 13:44:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 13:44:21,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-05 13:44:21,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:21,910 INFO L225 Difference]: With dead ends: 221 [2021-11-05 13:44:21,910 INFO L226 Difference]: Without dead ends: 117 [2021-11-05 13:44:21,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 13:44:21,911 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.57ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:21,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 3 Unknown, 0 Unchecked, 0.27ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 9.57ms Time] [2021-11-05 13:44:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-05 13:44:21,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-11-05 13:44:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 116 states have internal predecessors, (127), 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) [2021-11-05 13:44:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-11-05 13:44:21,917 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 67 [2021-11-05 13:44:21,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:21,917 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-11-05 13:44:21,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-05 13:44:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-11-05 13:44:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 13:44:21,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:21,918 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] [2021-11-05 13:44:21,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 13:44:21,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:21,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1940596789, now seen corresponding path program 1 times [2021-11-05 13:44:21,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:21,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051334717] [2021-11-05 13:44:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:21,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:22,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:22,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:22,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051334717] [2021-11-05 13:44:22,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051334717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:44:22,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004956645] [2021-11-05 13:44:22,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:22,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:22,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:22,250 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) [2021-11-05 13:44:22,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 13:44:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:22,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-05 13:44:22,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:44:23,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-05 13:44:23,208 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-05 13:44:23,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-05 13:44:23,253 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-11-05 13:44:23,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-05 13:44:23,297 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-05 13:44:23,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2021-11-05 13:44:23,828 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-05 13:44:23,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2021-11-05 13:44:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:44:23,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:44:23,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004956645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:23,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:44:23,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2021-11-05 13:44:23,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680904949] [2021-11-05 13:44:23,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:23,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 13:44:23,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:23,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 13:44:23,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-05 13:44:23,951 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-11-05 13:44:25,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:28,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:30,186 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:32,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:33,702 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2021-11-05 13:44:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-05 13:44:33,703 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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 68 [2021-11-05 13:44:33,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:33,704 INFO L225 Difference]: With dead ends: 185 [2021-11-05 13:44:33,704 INFO L226 Difference]: Without dead ends: 120 [2021-11-05 13:44:33,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1142.49ms TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2021-11-05 13:44:33,705 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 518 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 46 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8572.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.78ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9043.77ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:33,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 566 Invalid, 264 Unknown, 0 Unchecked, 3.78ms Time], IncrementalHoareTripleChecker [46 Valid, 214 Invalid, 4 Unknown, 0 Unchecked, 9043.77ms Time] [2021-11-05 13:44:33,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-05 13:44:33,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-11-05 13:44:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 116 states have internal predecessors, (126), 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) [2021-11-05 13:44:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 126 transitions. [2021-11-05 13:44:33,710 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 126 transitions. Word has length 68 [2021-11-05 13:44:33,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:33,711 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 126 transitions. [2021-11-05 13:44:33,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 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) [2021-11-05 13:44:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 126 transitions. [2021-11-05 13:44:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 13:44:33,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:33,712 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] [2021-11-05 13:44:33,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 13:44:33,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-05 13:44:33,924 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 352248887, now seen corresponding path program 1 times [2021-11-05 13:44:33,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:33,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116688251] [2021-11-05 13:44:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:33,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:34,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:34,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116688251] [2021-11-05 13:44:34,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116688251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:44:34,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211527678] [2021-11-05 13:44:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:34,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:34,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:34,248 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) [2021-11-05 13:44:34,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 13:44:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:34,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-05 13:44:34,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:44:35,530 INFO L354 Elim1Store]: treesize reduction 32, result has 22.0 percent of original size [2021-11-05 13:44:35,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 52 [2021-11-05 13:44:35,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:44:35,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 51 [2021-11-05 13:44:39,346 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-05 13:44:39,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 277 treesize of output 109 [2021-11-05 13:44:39,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 13:44:39,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:44:39,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211527678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:44:39,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 13:44:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4] total 22 [2021-11-05 13:44:39,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787484982] [2021-11-05 13:44:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:44:39,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 13:44:39,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:44:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 13:44:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:44:39,548 INFO L87 Difference]: Start difference. First operand 117 states and 126 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 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) [2021-11-05 13:44:41,585 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 [] [2021-11-05 13:44:43,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:44:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:44:47,243 INFO L93 Difference]: Finished difference Result 210 states and 229 transitions. [2021-11-05 13:44:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 13:44:47,244 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 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 68 [2021-11-05 13:44:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:44:47,245 INFO L225 Difference]: With dead ends: 210 [2021-11-05 13:44:47,245 INFO L226 Difference]: Without dead ends: 154 [2021-11-05 13:44:47,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4593.84ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-11-05 13:44:47,246 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 1024 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4965.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5224.63ms IncrementalHoareTripleChecker+Time [2021-11-05 13:44:47,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 617 Invalid, 348 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [55 Valid, 291 Invalid, 2 Unknown, 0 Unchecked, 5224.63ms Time] [2021-11-05 13:44:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-05 13:44:47,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 123. [2021-11-05 13:44:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 119 states have (on average 1.1176470588235294) internal successors, (133), 122 states have internal predecessors, (133), 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) [2021-11-05 13:44:47,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-05 13:44:47,260 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 68 [2021-11-05 13:44:47,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:44:47,261 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-05 13:44:47,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 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) [2021-11-05 13:44:47,261 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-05 13:44:47,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-05 13:44:47,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:44:47,261 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] [2021-11-05 13:44:47,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 13:44:47,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-05 13:44:47,475 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:44:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:44:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -457097739, now seen corresponding path program 1 times [2021-11-05 13:44:47,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:44:47,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359475163] [2021-11-05 13:44:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:47,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:44:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:44:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:44:47,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:44:47,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359475163] [2021-11-05 13:44:47,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359475163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:44:47,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754293369] [2021-11-05 13:44:47,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:44:47,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:44:47,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:44:47,824 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) [2021-11-05 13:44:47,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 13:54:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:54:42,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 13:54:42,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:54:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:54:42,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 13:54:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:54:43,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754293369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 13:54:43,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 13:54:43,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 13:54:43,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811378882] [2021-11-05 13:54:43,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 13:54:43,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:54:43,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:54:43,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:54:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:54:43,097 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2021-11-05 13:54:43,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:54:43,185 INFO L93 Difference]: Finished difference Result 236 states and 258 transitions. [2021-11-05 13:54:43,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 13:54:43,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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 68 [2021-11-05 13:54:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:54:43,186 INFO L225 Difference]: With dead ends: 236 [2021-11-05 13:54:43,186 INFO L226 Difference]: Without dead ends: 126 [2021-11-05 13:54:43,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 172.43ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-05 13:54:43,187 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 109 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.46ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.93ms IncrementalHoareTripleChecker+Time [2021-11-05 13:54:43,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.46ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 27.93ms Time] [2021-11-05 13:54:43,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-05 13:54:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-11-05 13:54:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.1147540983606556) internal successors, (136), 125 states have internal predecessors, (136), 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) [2021-11-05 13:54:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2021-11-05 13:54:43,194 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 68 [2021-11-05 13:54:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:54:43,194 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2021-11-05 13:54:43,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2021-11-05 13:54:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2021-11-05 13:54:43,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-05 13:54:43,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:54:43,194 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:54:43,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 13:54:43,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:54:43,395 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:54:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:54:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash -407340570, now seen corresponding path program 2 times [2021-11-05 13:54:43,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:54:43,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748170004] [2021-11-05 13:54:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:54:43,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:54:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:54:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:54:43,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:54:43,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748170004] [2021-11-05 13:54:43,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748170004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 13:54:43,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8899376] [2021-11-05 13:54:43,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 13:54:43,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:54:43,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:54:43,875 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) [2021-11-05 13:54:43,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15