./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_byte_buf_write_be32_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 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:33:09,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:33:09,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:33:10,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:33:10,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:33:10,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:33:10,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:33:10,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:33:10,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:33:10,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:33:10,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:33:10,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:33:10,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:33:10,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:33:10,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:33:10,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:33:10,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:33:10,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:33:10,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:33:10,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:33:10,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:33:10,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:33:10,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:33:10,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:33:10,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:33:10,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:33:10,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:33:10,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:33:10,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:33:10,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:33:10,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:33:10,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:33:10,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:33:10,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:33:10,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:33:10,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:33:10,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:33:10,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:33:10,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:33:10,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:33:10,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:33:10,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 22:33:10,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:33:10,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:33:10,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:33:10,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:33:10,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:33:10,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:33:10,102 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:33:10,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:33:10,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 22:33:10,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:33:10,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:33:10,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:33:10,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:33:10,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:33:10,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:33:10,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:33:10,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:33:10,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:33:10,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-03 22:33:10,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:33:10,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:33:10,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:33:10,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:33:10,297 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:33:10,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-03 22:33:10,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccaaddfa/cd4bc7ec8a10424bb5a853defaf0b2e6/FLAG3fa3f91bf [2021-11-03 22:33:10,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:33:10,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-03 22:33:10,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccaaddfa/cd4bc7ec8a10424bb5a853defaf0b2e6/FLAG3fa3f91bf [2021-11-03 22:33:11,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ccaaddfa/cd4bc7ec8a10424bb5a853defaf0b2e6 [2021-11-03 22:33:11,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:33:11,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:33:11,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:33:11,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:33:11,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:33:11,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:33:11" (1/1) ... [2021-11-03 22:33:11,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:11, skipping insertion in model container [2021-11-03 22:33:11,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:33:11" (1/1) ... [2021-11-03 22:33:11,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:33:11,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:33:11,611 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_byte_buf_write_be32_harness.i[4497,4510] [2021-11-03 22:33:11,616 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_byte_buf_write_be32_harness.i[4557,4570] [2021-11-03 22:33:11,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:33:11,628 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:12,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,190 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,191 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,377 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:12,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:12,378 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:12,379 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:12,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:12,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:12,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:12,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:12,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:12,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:12,513 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:12,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,583 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:12,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:33:12,660 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_byte_buf_write_be32_harness.i[4497,4510] [2021-11-03 22:33:12,661 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_byte_buf_write_be32_harness.i[4557,4570] [2021-11-03 22:33:12,662 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:33:12,662 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:33:12,678 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,679 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,680 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:33:12,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:33:12,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:33:12,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:33:12,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:33:12,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:33:12,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:33:12,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:33:12,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:33:12,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:33:12,752 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:33:12,826 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,827 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:33:12,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:33:13,042 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:33:13,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13 WrapperNode [2021-11-03 22:33:13,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:33:13,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:13,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:33:13,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:33:13,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:33:13,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:33:13,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:33:13,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:33:13,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:33:13,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:33:13,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:33:13,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:33:13,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (1/1) ... [2021-11-03 22:33:13,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:33:13,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:33:13,332 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) [2021-11-03 22:33:13,347 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 [2021-11-03 22:33:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-03 22:33:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:33:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 22:33:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:33:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:33:13,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:33:13,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:33:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:33:13,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:33:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:33:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 22:33:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 22:33:17,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:33:17,817 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-03 22:33:17,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:17 BoogieIcfgContainer [2021-11-03 22:33:17,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:33:17,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:33:17,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:33:17,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:33:17,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:33:11" (1/3) ... [2021-11-03 22:33:17,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49313771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:17, skipping insertion in model container [2021-11-03 22:33:17,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:33:13" (2/3) ... [2021-11-03 22:33:17,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49313771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:33:17, skipping insertion in model container [2021-11-03 22:33:17,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:33:17" (3/3) ... [2021-11-03 22:33:17,828 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-03 22:33:17,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:33:17,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 22:33:17,870 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:33:17,876 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 [2021-11-03 22:33:17,876 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 22:33:17,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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) [2021-11-03 22:33:17,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:33:17,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:17,899 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] [2021-11-03 22:33:17,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-03 22:33:17,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:17,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728052288] [2021-11-03 22:33:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:17,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:18,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:18,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728052288] [2021-11-03 22:33:18,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728052288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:18,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:18,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 22:33:18,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167870395] [2021-11-03 22:33:18,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:18,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:33:18,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:33:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:33:18,376 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2021-11-03 22:33:20,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:33:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:21,569 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-03 22:33:21,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:33:21,572 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-11-03 22:33:21,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:21,579 INFO L225 Difference]: With dead ends: 368 [2021-11-03 22:33:21,579 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:33:21,581 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 [2021-11-03 22:33:21,585 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2835.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3128.39ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:21,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 3128.39ms Time] [2021-11-03 22:33:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:33:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:33:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 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) [2021-11-03 22:33:21,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-03 22:33:21,617 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-03 22:33:21,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:21,617 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-03 22:33:21,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2021-11-03 22:33:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-03 22:33:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:33:21,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:21,619 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] [2021-11-03 22:33:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 22:33:21,619 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-03 22:33:21,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:21,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356785217] [2021-11-03 22:33:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:21,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:21,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:21,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356785217] [2021-11-03 22:33:21,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356785217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:21,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:21,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:33:21,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779158421] [2021-11-03 22:33:21,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:21,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:33:21,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:21,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:33:21,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:33:21,837 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-03 22:33:23,889 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:33:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:25,560 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-03 22:33:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:33:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-03 22:33:25,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:25,564 INFO L225 Difference]: With dead ends: 336 [2021-11-03 22:33:25,564 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:33:25,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:25,565 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3188.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.07ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3640.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:25,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 10.07ms Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3640.96ms Time] [2021-11-03 22:33:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:33:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:33:25,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 states have internal predecessors, (228), 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) [2021-11-03 22:33:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-03 22:33:25,574 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-03 22:33:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:25,575 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-03 22:33:25,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-03 22:33:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-03 22:33:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:33:25,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:25,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:33:25,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 22:33:25,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:25,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-03 22:33:25,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:25,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308350075] [2021-11-03 22:33:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:25,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:25,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:25,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308350075] [2021-11-03 22:33:25,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308350075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:25,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:25,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:33:25,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058680188] [2021-11-03 22:33:25,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:25,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:33:25,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:33:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:33:25,791 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:27,833 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 [] [2021-11-03 22:33:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:30,051 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-03 22:33:30,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:33:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 22:33:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:30,053 INFO L225 Difference]: With dead ends: 397 [2021-11-03 22:33:30,053 INFO L226 Difference]: Without dead ends: 241 [2021-11-03 22:33:30,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:30,055 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3954.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.99ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4181.12ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:30,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 9.99ms Time], IncrementalHoareTripleChecker [21 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 4181.12ms Time] [2021-11-03 22:33:30,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-03 22:33:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-03 22:33:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 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) [2021-11-03 22:33:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-03 22:33:30,070 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-03 22:33:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:30,071 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-03 22:33:30,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-03 22:33:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:33:30,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:30,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:33:30,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 22:33:30,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:30,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-03 22:33:30,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:30,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570502096] [2021-11-03 22:33:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:30,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:30,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:30,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570502096] [2021-11-03 22:33:30,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570502096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:30,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:30,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:33:30,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497771981] [2021-11-03 22:33:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:30,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:33:30,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:30,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:33:30,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:30,351 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:32,395 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 [] [2021-11-03 22:33:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:34,002 INFO L93 Difference]: Finished difference Result 314 states and 387 transitions. [2021-11-03 22:33:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:33:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 22:33:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:34,004 INFO L225 Difference]: With dead ends: 314 [2021-11-03 22:33:34,004 INFO L226 Difference]: Without dead ends: 193 [2021-11-03 22:33:34,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 138.21ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:33:34,005 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 482 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3168.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.37ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3520.33ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:34,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 7.37ms Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 1 Unknown, 0 Unchecked, 3520.33ms Time] [2021-11-03 22:33:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-03 22:33:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-03 22:33:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3131868131868132) internal successors, (239), 192 states have internal predecessors, (239), 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) [2021-11-03 22:33:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-11-03 22:33:34,012 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 51 [2021-11-03 22:33:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:34,013 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-11-03 22:33:34,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:33:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-11-03 22:33:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 22:33:34,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:34,014 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] [2021-11-03 22:33:34,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 22:33:34,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1284348023, now seen corresponding path program 1 times [2021-11-03 22:33:34,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:34,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162982902] [2021-11-03 22:33:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:34,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:34,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:34,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162982902] [2021-11-03 22:33:34,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162982902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:34,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:34,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:33:34,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132657428] [2021-11-03 22:33:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:34,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:33:34,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:33:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:33:34,323 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-11-03 22:33:37,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:33:39,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:39,042 INFO L93 Difference]: Finished difference Result 265 states and 320 transitions. [2021-11-03 22:33:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:33:39,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 [2021-11-03 22:33:39,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:39,044 INFO L225 Difference]: With dead ends: 265 [2021-11-03 22:33:39,044 INFO L226 Difference]: Without dead ends: 193 [2021-11-03 22:33:39,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 224.72ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:33:39,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 624 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4078.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.67ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4542.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:39,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 7.67ms Time], IncrementalHoareTripleChecker [6 Valid, 440 Invalid, 1 Unknown, 0 Unchecked, 4542.78ms Time] [2021-11-03 22:33:39,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-03 22:33:39,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-11-03 22:33:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3021978021978022) internal successors, (237), 192 states have internal predecessors, (237), 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) [2021-11-03 22:33:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 237 transitions. [2021-11-03 22:33:39,052 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 237 transitions. Word has length 57 [2021-11-03 22:33:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:39,053 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 237 transitions. [2021-11-03 22:33:39,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-11-03 22:33:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 237 transitions. [2021-11-03 22:33:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-03 22:33:39,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:39,054 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] [2021-11-03 22:33:39,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 22:33:39,054 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:39,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:39,054 INFO L85 PathProgramCache]: Analyzing trace with hash 718341164, now seen corresponding path program 1 times [2021-11-03 22:33:39,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:39,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687032393] [2021-11-03 22:33:39,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:39,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:39,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:39,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:39,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687032393] [2021-11-03 22:33:39,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687032393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:39,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:39,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:33:39,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060812647] [2021-11-03 22:33:39,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:39,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:33:39,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:33:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:33:39,671 INFO L87 Difference]: Start difference. First operand 193 states and 237 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2021-11-03 22:33:41,736 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 [] [2021-11-03 22:33:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:45,181 INFO L93 Difference]: Finished difference Result 310 states and 367 transitions. [2021-11-03 22:33:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:33:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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 63 [2021-11-03 22:33:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:45,182 INFO L225 Difference]: With dead ends: 310 [2021-11-03 22:33:45,182 INFO L226 Difference]: Without dead ends: 297 [2021-11-03 22:33:45,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 240.88ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:33:45,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4738.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.62ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5310.15ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:45,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 1048 Unknown, 0 Unchecked, 10.62ms Time], IncrementalHoareTripleChecker [40 Valid, 1007 Invalid, 1 Unknown, 0 Unchecked, 5310.15ms Time] [2021-11-03 22:33:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-03 22:33:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 199. [2021-11-03 22:33:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 198 states have internal predecessors, (242), 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) [2021-11-03 22:33:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 242 transitions. [2021-11-03 22:33:45,189 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 242 transitions. Word has length 63 [2021-11-03 22:33:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:45,189 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 242 transitions. [2021-11-03 22:33:45,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 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) [2021-11-03 22:33:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 242 transitions. [2021-11-03 22:33:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:45,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:45,190 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] [2021-11-03 22:33:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 22:33:45,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1235696670, now seen corresponding path program 1 times [2021-11-03 22:33:45,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:45,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735351720] [2021-11-03 22:33:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:45,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:45,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:45,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735351720] [2021-11-03 22:33:45,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735351720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:45,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:45,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:33:45,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724247180] [2021-11-03 22:33:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:45,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:33:45,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:33:45,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:33:45,414 INFO L87 Difference]: Start difference. First operand 199 states and 242 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-03 22:33:48,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:33:51,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:33:51,233 INFO L93 Difference]: Finished difference Result 595 states and 724 transitions. [2021-11-03 22:33:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:33:51,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 [2021-11-03 22:33:51,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:33:51,238 INFO L225 Difference]: With dead ends: 595 [2021-11-03 22:33:51,238 INFO L226 Difference]: Without dead ends: 418 [2021-11-03 22:33:51,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 111.46ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:33:51,239 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 386 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5212.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.40ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5693.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:33:51,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 0 Invalid, 863 Unknown, 0 Unchecked, 9.40ms Time], IncrementalHoareTripleChecker [27 Valid, 835 Invalid, 1 Unknown, 0 Unchecked, 5693.63ms Time] [2021-11-03 22:33:51,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-11-03 22:33:51,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 239. [2021-11-03 22:33:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2850877192982457) internal successors, (293), 238 states have internal predecessors, (293), 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) [2021-11-03 22:33:51,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 293 transitions. [2021-11-03 22:33:51,245 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 293 transitions. Word has length 67 [2021-11-03 22:33:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:33:51,246 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 293 transitions. [2021-11-03 22:33:51,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2021-11-03 22:33:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 293 transitions. [2021-11-03 22:33:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:33:51,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:33:51,247 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] [2021-11-03 22:33:51,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 22:33:51,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:33:51,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:33:51,252 INFO L85 PathProgramCache]: Analyzing trace with hash -555638300, now seen corresponding path program 1 times [2021-11-03 22:33:51,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:33:51,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627348725] [2021-11-03 22:33:51,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:33:51,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:33:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:33:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:33:51,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:33:51,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627348725] [2021-11-03 22:33:51,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627348725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:33:51,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:33:51,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:33:51,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891787730] [2021-11-03 22:33:51,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:33:51,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:33:51,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:33:51,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:33:51,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:33:51,760 INFO L87 Difference]: Start difference. First operand 239 states and 293 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2021-11-03 22:33:54,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:01,840 INFO L93 Difference]: Finished difference Result 561 states and 678 transitions. [2021-11-03 22:34:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:34:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 [2021-11-03 22:34:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:01,846 INFO L225 Difference]: With dead ends: 561 [2021-11-03 22:34:01,846 INFO L226 Difference]: Without dead ends: 483 [2021-11-03 22:34:01,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1146.34ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:34:01,847 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1197 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 69 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8414.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.11ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9078.52ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:01,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 0 Invalid, 2141 Unknown, 0 Unchecked, 21.11ms Time], IncrementalHoareTripleChecker [69 Valid, 2071 Invalid, 1 Unknown, 0 Unchecked, 9078.52ms Time] [2021-11-03 22:34:01,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-03 22:34:01,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 259. [2021-11-03 22:34:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.2862903225806452) internal successors, (319), 258 states have internal predecessors, (319), 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) [2021-11-03 22:34:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 319 transitions. [2021-11-03 22:34:01,856 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 319 transitions. Word has length 67 [2021-11-03 22:34:01,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:01,858 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 319 transitions. [2021-11-03 22:34:01,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2021-11-03 22:34:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 319 transitions. [2021-11-03 22:34:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:34:01,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:01,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:01,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 22:34:01,863 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:01,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash -813803738, now seen corresponding path program 1 times [2021-11-03 22:34:01,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:01,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089335912] [2021-11-03 22:34:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:01,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:02,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:02,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089335912] [2021-11-03 22:34:02,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089335912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:02,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:02,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:34:02,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752159816] [2021-11-03 22:34:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:02,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:34:02,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:02,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:34:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:34:02,555 INFO L87 Difference]: Start difference. First operand 259 states and 319 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2021-11-03 22:34:04,601 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 [] [2021-11-03 22:34:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:09,190 INFO L93 Difference]: Finished difference Result 532 states and 641 transitions. [2021-11-03 22:34:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:34:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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 [2021-11-03 22:34:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:09,192 INFO L225 Difference]: With dead ends: 532 [2021-11-03 22:34:09,192 INFO L226 Difference]: Without dead ends: 395 [2021-11-03 22:34:09,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 888.04ms TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-03 22:34:09,193 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 749 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5443.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.91ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5897.05ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:09,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 11.91ms Time], IncrementalHoareTripleChecker [36 Valid, 1196 Invalid, 1 Unknown, 0 Unchecked, 5897.05ms Time] [2021-11-03 22:34:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-03 22:34:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 259. [2021-11-03 22:34:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 248 states have (on average 1.282258064516129) internal successors, (318), 258 states have internal predecessors, (318), 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) [2021-11-03 22:34:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 318 transitions. [2021-11-03 22:34:09,200 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 318 transitions. Word has length 67 [2021-11-03 22:34:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:09,200 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 318 transitions. [2021-11-03 22:34:09,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2021-11-03 22:34:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 318 transitions. [2021-11-03 22:34:09,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 22:34:09,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:09,201 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] [2021-11-03 22:34:09,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 22:34:09,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:09,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1892815656, now seen corresponding path program 1 times [2021-11-03 22:34:09,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:09,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310531177] [2021-11-03 22:34:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:09,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:11,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:11,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310531177] [2021-11-03 22:34:11,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310531177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:11,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:11,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:34:11,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436617061] [2021-11-03 22:34:11,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:11,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:34:11,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:11,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:34:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:34:11,419 INFO L87 Difference]: Start difference. First operand 259 states and 318 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2021-11-03 22:34:13,465 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 [] [2021-11-03 22:34:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:17,873 INFO L93 Difference]: Finished difference Result 552 states and 681 transitions. [2021-11-03 22:34:17,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:34:17,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 [2021-11-03 22:34:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:17,876 INFO L225 Difference]: With dead ends: 552 [2021-11-03 22:34:17,876 INFO L226 Difference]: Without dead ends: 327 [2021-11-03 22:34:17,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 648.23ms TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:34:17,877 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 700 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5513.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.97ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5972.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:17,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 0 Invalid, 1239 Unknown, 0 Unchecked, 12.97ms Time], IncrementalHoareTripleChecker [26 Valid, 1212 Invalid, 1 Unknown, 0 Unchecked, 5972.96ms Time] [2021-11-03 22:34:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-03 22:34:17,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2021-11-03 22:34:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 251 states have (on average 1.2828685258964143) internal successors, (322), 261 states have internal predecessors, (322), 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) [2021-11-03 22:34:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 322 transitions. [2021-11-03 22:34:17,884 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 322 transitions. Word has length 67 [2021-11-03 22:34:17,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:17,884 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 322 transitions. [2021-11-03 22:34:17,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2021-11-03 22:34:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 322 transitions. [2021-11-03 22:34:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:34:17,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:17,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:17,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 22:34:17,885 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2013763211, now seen corresponding path program 1 times [2021-11-03 22:34:17,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:17,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134343449] [2021-11-03 22:34:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:17,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:19,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:19,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134343449] [2021-11-03 22:34:19,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134343449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:19,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:19,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:34:19,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040821265] [2021-11-03 22:34:19,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:19,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:34:19,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:19,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:34:19,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:34:19,144 INFO L87 Difference]: Start difference. First operand 262 states and 322 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2021-11-03 22:34:21,190 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 [] [2021-11-03 22:34:33,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:33,181 INFO L93 Difference]: Finished difference Result 623 states and 766 transitions. [2021-11-03 22:34:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 22:34:33,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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 74 [2021-11-03 22:34:33,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:33,183 INFO L225 Difference]: With dead ends: 623 [2021-11-03 22:34:33,183 INFO L226 Difference]: Without dead ends: 383 [2021-11-03 22:34:33,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2123.60ms TimeCoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2021-11-03 22:34:33,184 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 805 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 68 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11676.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.51ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12439.88ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 0 Invalid, 3653 Unknown, 0 Unchecked, 32.51ms Time], IncrementalHoareTripleChecker [68 Valid, 3584 Invalid, 1 Unknown, 0 Unchecked, 12439.88ms Time] [2021-11-03 22:34:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-03 22:34:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 273. [2021-11-03 22:34:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 262 states have (on average 1.2404580152671756) internal successors, (325), 272 states have internal predecessors, (325), 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) [2021-11-03 22:34:33,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 325 transitions. [2021-11-03 22:34:33,193 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 325 transitions. Word has length 74 [2021-11-03 22:34:33,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:33,193 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 325 transitions. [2021-11-03 22:34:33,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 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) [2021-11-03 22:34:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 325 transitions. [2021-11-03 22:34:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:34:33,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:33,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:33,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 22:34:33,194 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1453063433, now seen corresponding path program 1 times [2021-11-03 22:34:33,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:33,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772377111] [2021-11-03 22:34:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:33,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:33,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:33,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772377111] [2021-11-03 22:34:33,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772377111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:33,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:33,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:34:33,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540530539] [2021-11-03 22:34:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:33,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:34:33,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:34:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:34:33,728 INFO L87 Difference]: Start difference. First operand 273 states and 325 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-03 22:34:36,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:45,298 INFO L93 Difference]: Finished difference Result 829 states and 987 transitions. [2021-11-03 22:34:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:34:45,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 74 [2021-11-03 22:34:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:45,300 INFO L225 Difference]: With dead ends: 829 [2021-11-03 22:34:45,300 INFO L226 Difference]: Without dead ends: 619 [2021-11-03 22:34:45,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1052.96ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:34:45,301 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9844.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.10ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10602.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:45,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2546 Unknown, 0 Unchecked, 22.10ms Time], IncrementalHoareTripleChecker [41 Valid, 2504 Invalid, 1 Unknown, 0 Unchecked, 10602.63ms Time] [2021-11-03 22:34:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-03 22:34:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 284. [2021-11-03 22:34:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 273 states have (on average 1.2380952380952381) internal successors, (338), 283 states have internal predecessors, (338), 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) [2021-11-03 22:34:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 338 transitions. [2021-11-03 22:34:45,309 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 338 transitions. Word has length 74 [2021-11-03 22:34:45,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:45,309 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 338 transitions. [2021-11-03 22:34:45,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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) [2021-11-03 22:34:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 338 transitions. [2021-11-03 22:34:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-03 22:34:45,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:45,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:45,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 22:34:45,310 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash -360304177, now seen corresponding path program 1 times [2021-11-03 22:34:45,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:45,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27916264] [2021-11-03 22:34:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:45,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:46,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:46,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27916264] [2021-11-03 22:34:46,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27916264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:46,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:46,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:34:46,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212233314] [2021-11-03 22:34:46,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:46,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:34:46,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:46,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:34:46,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:34:46,188 INFO L87 Difference]: Start difference. First operand 284 states and 338 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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) [2021-11-03 22:34:49,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:34:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:34:57,770 INFO L93 Difference]: Finished difference Result 572 states and 683 transitions. [2021-11-03 22:34:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:34:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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 74 [2021-11-03 22:34:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:34:57,772 INFO L225 Difference]: With dead ends: 572 [2021-11-03 22:34:57,772 INFO L226 Difference]: Without dead ends: 377 [2021-11-03 22:34:57,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1454.41ms TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:34:57,773 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 603 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9695.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.15ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10422.77ms IncrementalHoareTripleChecker+Time [2021-11-03 22:34:57,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 0 Invalid, 2313 Unknown, 0 Unchecked, 24.15ms Time], IncrementalHoareTripleChecker [38 Valid, 2274 Invalid, 1 Unknown, 0 Unchecked, 10422.77ms Time] [2021-11-03 22:34:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-03 22:34:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 274. [2021-11-03 22:34:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 263 states have (on average 1.2357414448669202) internal successors, (325), 273 states have internal predecessors, (325), 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) [2021-11-03 22:34:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 325 transitions. [2021-11-03 22:34:57,780 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 325 transitions. Word has length 74 [2021-11-03 22:34:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:34:57,780 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 325 transitions. [2021-11-03 22:34:57,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 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) [2021-11-03 22:34:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 325 transitions. [2021-11-03 22:34:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:34:57,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:34:57,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:34:57,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 22:34:57,781 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:34:57,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:34:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1046518488, now seen corresponding path program 1 times [2021-11-03 22:34:57,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:34:57,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688755223] [2021-11-03 22:34:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:34:57,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:34:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:34:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:34:58,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:34:58,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688755223] [2021-11-03 22:34:58,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688755223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:34:58,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:34:58,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:34:58,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637971111] [2021-11-03 22:34:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:34:58,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:34:58,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:34:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:34:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:34:58,847 INFO L87 Difference]: Start difference. First operand 274 states and 325 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:01,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:13,324 INFO L93 Difference]: Finished difference Result 605 states and 720 transitions. [2021-11-03 22:35:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 22:35:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:35:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:13,326 INFO L225 Difference]: With dead ends: 605 [2021-11-03 22:35:13,326 INFO L226 Difference]: Without dead ends: 456 [2021-11-03 22:35:13,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1916.83ms TimeCoverageRelationStatistics Valid=303, Invalid=957, Unknown=0, NotChecked=0, Total=1260 [2021-11-03 22:35:13,327 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 816 mSDsluCounter, 2224 mSDsCounter, 0 mSdLazyCounter, 3704 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12173.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.77ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12983.53ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:13,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 0 Invalid, 3759 Unknown, 0 Unchecked, 31.77ms Time], IncrementalHoareTripleChecker [54 Valid, 3704 Invalid, 1 Unknown, 0 Unchecked, 12983.53ms Time] [2021-11-03 22:35:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-03 22:35:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 302. [2021-11-03 22:35:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2302405498281788) internal successors, (358), 301 states have internal predecessors, (358), 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) [2021-11-03 22:35:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 358 transitions. [2021-11-03 22:35:13,335 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 358 transitions. Word has length 75 [2021-11-03 22:35:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:13,335 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 358 transitions. [2021-11-03 22:35:13,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 358 transitions. [2021-11-03 22:35:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 22:35:13,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:13,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:13,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 22:35:13,336 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -350949144, now seen corresponding path program 1 times [2021-11-03 22:35:13,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:13,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068685187] [2021-11-03 22:35:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:13,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:13,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:13,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068685187] [2021-11-03 22:35:13,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068685187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:13,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:13,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:35:13,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391243344] [2021-11-03 22:35:13,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:13,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:35:13,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:13,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:35:13,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:35:13,870 INFO L87 Difference]: Start difference. First operand 302 states and 358 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:15,932 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 [] [2021-11-03 22:35:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:21,119 INFO L93 Difference]: Finished difference Result 647 states and 752 transitions. [2021-11-03 22:35:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:35:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 22:35:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:21,121 INFO L225 Difference]: With dead ends: 647 [2021-11-03 22:35:21,121 INFO L226 Difference]: Without dead ends: 365 [2021-11-03 22:35:21,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 263.04ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:21,122 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6557.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.13ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7059.13ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:21,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 1582 Unknown, 0 Unchecked, 11.13ms Time], IncrementalHoareTripleChecker [36 Valid, 1545 Invalid, 1 Unknown, 0 Unchecked, 7059.13ms Time] [2021-11-03 22:35:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-03 22:35:21,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 302. [2021-11-03 22:35:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 291 states have (on average 1.2061855670103092) internal successors, (351), 301 states have internal predecessors, (351), 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) [2021-11-03 22:35:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 351 transitions. [2021-11-03 22:35:21,131 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 351 transitions. Word has length 75 [2021-11-03 22:35:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:21,131 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 351 transitions. [2021-11-03 22:35:21,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 351 transitions. [2021-11-03 22:35:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:35:21,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:21,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:21,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 22:35:21,135 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:21,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:21,135 INFO L85 PathProgramCache]: Analyzing trace with hash -474375862, now seen corresponding path program 1 times [2021-11-03 22:35:21,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:21,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798123119] [2021-11-03 22:35:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:21,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:21,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:21,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798123119] [2021-11-03 22:35:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798123119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:21,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:21,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 22:35:21,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356576338] [2021-11-03 22:35:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:35:21,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:35:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:35:21,331 INFO L87 Difference]: Start difference. First operand 302 states and 351 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-03 22:35:24,291 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:26,708 INFO L93 Difference]: Finished difference Result 551 states and 640 transitions. [2021-11-03 22:35:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:35:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-11-03 22:35:26,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:26,709 INFO L225 Difference]: With dead ends: 551 [2021-11-03 22:35:26,709 INFO L226 Difference]: Without dead ends: 252 [2021-11-03 22:35:26,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.26ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:35:26,710 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4819.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.34ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5308.46ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:26,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 4.34ms Time], IncrementalHoareTripleChecker [18 Valid, 655 Invalid, 1 Unknown, 0 Unchecked, 5308.46ms Time] [2021-11-03 22:35:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-11-03 22:35:26,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 231. [2021-11-03 22:35:26,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.190909090909091) internal successors, (262), 230 states have internal predecessors, (262), 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) [2021-11-03 22:35:26,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 262 transitions. [2021-11-03 22:35:26,716 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 262 transitions. Word has length 79 [2021-11-03 22:35:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:26,716 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 262 transitions. [2021-11-03 22:35:26,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-11-03 22:35:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 262 transitions. [2021-11-03 22:35:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:35:26,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:26,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:26,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 22:35:26,717 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1364907914, now seen corresponding path program 1 times [2021-11-03 22:35:26,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:26,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64415085] [2021-11-03 22:35:26,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:26,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:27,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:27,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64415085] [2021-11-03 22:35:27,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64415085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:27,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:27,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:35:27,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918538717] [2021-11-03 22:35:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:27,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:35:27,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:35:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:27,513 INFO L87 Difference]: Start difference. First operand 231 states and 262 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-03 22:35:29,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:34,436 INFO L93 Difference]: Finished difference Result 462 states and 522 transitions. [2021-11-03 22:35:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:35:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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 79 [2021-11-03 22:35:34,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:34,437 INFO L225 Difference]: With dead ends: 462 [2021-11-03 22:35:34,437 INFO L226 Difference]: Without dead ends: 276 [2021-11-03 22:35:34,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 735.29ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:35:34,438 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 297 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5980.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.28ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6443.45ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:34,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 0 Invalid, 1241 Unknown, 0 Unchecked, 12.28ms Time], IncrementalHoareTripleChecker [36 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 6443.45ms Time] [2021-11-03 22:35:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-03 22:35:34,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 250. [2021-11-03 22:35:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 239 states have (on average 1.1799163179916319) internal successors, (282), 249 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:35:34,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 282 transitions. [2021-11-03 22:35:34,444 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 282 transitions. Word has length 79 [2021-11-03 22:35:34,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:34,444 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 282 transitions. [2021-11-03 22:35:34,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2021-11-03 22:35:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 282 transitions. [2021-11-03 22:35:34,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 22:35:34,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:34,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:34,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 22:35:34,445 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:34,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:34,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1084692216, now seen corresponding path program 1 times [2021-11-03 22:35:34,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:34,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233690934] [2021-11-03 22:35:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:34,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:37,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:37,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233690934] [2021-11-03 22:35:37,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233690934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:37,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:37,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:35:37,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239860402] [2021-11-03 22:35:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:37,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:35:37,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:37,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:35:37,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:35:37,096 INFO L87 Difference]: Start difference. First operand 250 states and 282 transitions. Second operand has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 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) [2021-11-03 22:35:39,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:45,555 INFO L93 Difference]: Finished difference Result 539 states and 609 transitions. [2021-11-03 22:35:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:35:45,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 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 79 [2021-11-03 22:35:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:45,561 INFO L225 Difference]: With dead ends: 539 [2021-11-03 22:35:45,561 INFO L226 Difference]: Without dead ends: 388 [2021-11-03 22:35:45,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1169.80ms TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:35:45,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 899 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 44 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7188.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.79ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7791.32ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:45,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 13.79ms Time], IncrementalHoareTripleChecker [44 Valid, 1770 Invalid, 1 Unknown, 0 Unchecked, 7791.32ms Time] [2021-11-03 22:35:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-11-03 22:35:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 346. [2021-11-03 22:35:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.1970149253731344) internal successors, (401), 345 states have internal predecessors, (401), 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) [2021-11-03 22:35:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 401 transitions. [2021-11-03 22:35:45,576 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 401 transitions. Word has length 79 [2021-11-03 22:35:45,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:45,576 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 401 transitions. [2021-11-03 22:35:45,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.583333333333333) internal successors, (79), 12 states have internal predecessors, (79), 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) [2021-11-03 22:35:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 401 transitions. [2021-11-03 22:35:45,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:35:45,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:45,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 22:35:45,577 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:45,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:45,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1500436263, now seen corresponding path program 1 times [2021-11-03 22:35:45,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:45,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285458743] [2021-11-03 22:35:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:45,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:45,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:45,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285458743] [2021-11-03 22:35:45,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285458743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:45,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:45,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:35:45,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717573749] [2021-11-03 22:35:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:45,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:35:45,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:35:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:35:45,861 INFO L87 Difference]: Start difference. First operand 346 states and 401 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2021-11-03 22:35:48,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:35:52,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:35:52,798 INFO L93 Difference]: Finished difference Result 773 states and 890 transitions. [2021-11-03 22:35:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:35:52,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 82 [2021-11-03 22:35:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:35:52,800 INFO L225 Difference]: With dead ends: 773 [2021-11-03 22:35:52,800 INFO L226 Difference]: Without dead ends: 573 [2021-11-03 22:35:52,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 314.26ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:35:52,801 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6094.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6657.11ms IncrementalHoareTripleChecker+Time [2021-11-03 22:35:52,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 1207 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [15 Valid, 1191 Invalid, 1 Unknown, 0 Unchecked, 6657.11ms Time] [2021-11-03 22:35:52,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-03 22:35:52,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 346. [2021-11-03 22:35:52,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.1940298507462686) internal successors, (400), 345 states have internal predecessors, (400), 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) [2021-11-03 22:35:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 400 transitions. [2021-11-03 22:35:52,812 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 400 transitions. Word has length 82 [2021-11-03 22:35:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:35:52,813 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 400 transitions. [2021-11-03 22:35:52,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2021-11-03 22:35:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 400 transitions. [2021-11-03 22:35:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:35:52,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:35:52,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:35:52,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 22:35:52,814 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:35:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:35:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash -832956375, now seen corresponding path program 1 times [2021-11-03 22:35:52,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:35:52,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503990393] [2021-11-03 22:35:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:35:52,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:35:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:35:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:35:53,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:35:53,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503990393] [2021-11-03 22:35:53,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503990393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:35:53,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:35:53,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:35:53,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995120030] [2021-11-03 22:35:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:35:53,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:35:53,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:35:53,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:35:53,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:35:53,559 INFO L87 Difference]: Start difference. First operand 346 states and 400 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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) [2021-11-03 22:35:55,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:02,812 INFO L93 Difference]: Finished difference Result 697 states and 793 transitions. [2021-11-03 22:36:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-03 22:36:02,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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 82 [2021-11-03 22:36:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:02,814 INFO L225 Difference]: With dead ends: 697 [2021-11-03 22:36:02,814 INFO L226 Difference]: Without dead ends: 546 [2021-11-03 22:36:02,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1233.75ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:36:02,815 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 473 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7495.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.94ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8268.38ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:02,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 0 Invalid, 2089 Unknown, 0 Unchecked, 17.94ms Time], IncrementalHoareTripleChecker [37 Valid, 2051 Invalid, 1 Unknown, 0 Unchecked, 8268.38ms Time] [2021-11-03 22:36:02,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-03 22:36:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 356. [2021-11-03 22:36:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 345 states have (on average 1.1884057971014492) internal successors, (410), 355 states have internal predecessors, (410), 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) [2021-11-03 22:36:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 410 transitions. [2021-11-03 22:36:02,832 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 410 transitions. Word has length 82 [2021-11-03 22:36:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:02,832 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 410 transitions. [2021-11-03 22:36:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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) [2021-11-03 22:36:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 410 transitions. [2021-11-03 22:36:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 22:36:02,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:02,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:02,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 22:36:02,833 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1012410791, now seen corresponding path program 1 times [2021-11-03 22:36:02,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:02,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669094530] [2021-11-03 22:36:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:02,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:03,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:03,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669094530] [2021-11-03 22:36:03,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669094530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:03,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:03,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:36:03,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172499520] [2021-11-03 22:36:03,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:03,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:36:03,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:03,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:36:03,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:36:03,832 INFO L87 Difference]: Start difference. First operand 356 states and 410 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2021-11-03 22:36:05,877 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 [] [2021-11-03 22:36:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:12,913 INFO L93 Difference]: Finished difference Result 628 states and 728 transitions. [2021-11-03 22:36:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:36:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 82 [2021-11-03 22:36:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:12,915 INFO L225 Difference]: With dead ends: 628 [2021-11-03 22:36:12,915 INFO L226 Difference]: Without dead ends: 357 [2021-11-03 22:36:12,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1346.24ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:36:12,916 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 501 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7606.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.57ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8162.96ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:12,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 0 Invalid, 1909 Unknown, 0 Unchecked, 20.57ms Time], IncrementalHoareTripleChecker [53 Valid, 1855 Invalid, 1 Unknown, 0 Unchecked, 8162.96ms Time] [2021-11-03 22:36:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-03 22:36:12,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 329. [2021-11-03 22:36:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 318 states have (on average 1.1886792452830188) internal successors, (378), 328 states have internal predecessors, (378), 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) [2021-11-03 22:36:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 378 transitions. [2021-11-03 22:36:12,936 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 378 transitions. Word has length 82 [2021-11-03 22:36:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:12,936 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 378 transitions. [2021-11-03 22:36:12,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2021-11-03 22:36:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 378 transitions. [2021-11-03 22:36:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:36:12,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:12,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:12,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 22:36:12,938 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 121635765, now seen corresponding path program 1 times [2021-11-03 22:36:12,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:12,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302678966] [2021-11-03 22:36:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:12,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:13,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:13,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302678966] [2021-11-03 22:36:13,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302678966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:13,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:36:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367143347] [2021-11-03 22:36:13,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:13,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:36:13,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:36:13,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:36:13,344 INFO L87 Difference]: Start difference. First operand 329 states and 378 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2021-11-03 22:36:16,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:20,745 INFO L93 Difference]: Finished difference Result 644 states and 752 transitions. [2021-11-03 22:36:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:36:20,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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 85 [2021-11-03 22:36:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:20,747 INFO L225 Difference]: With dead ends: 644 [2021-11-03 22:36:20,747 INFO L226 Difference]: Without dead ends: 529 [2021-11-03 22:36:20,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 462.16ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:36:20,748 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 575 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6469.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.27ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7069.23ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:20,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 0 Invalid, 1162 Unknown, 0 Unchecked, 11.27ms Time], IncrementalHoareTripleChecker [24 Valid, 1137 Invalid, 1 Unknown, 0 Unchecked, 7069.23ms Time] [2021-11-03 22:36:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-03 22:36:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 359. [2021-11-03 22:36:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 348 states have (on average 1.1896551724137931) internal successors, (414), 358 states have internal predecessors, (414), 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) [2021-11-03 22:36:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 414 transitions. [2021-11-03 22:36:20,757 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 414 transitions. Word has length 85 [2021-11-03 22:36:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:20,757 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 414 transitions. [2021-11-03 22:36:20,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 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) [2021-11-03 22:36:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 414 transitions. [2021-11-03 22:36:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:36:20,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:20,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:20,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 22:36:20,758 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:20,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash -136529673, now seen corresponding path program 1 times [2021-11-03 22:36:20,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693344322] [2021-11-03 22:36:20,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:20,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:21,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:21,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693344322] [2021-11-03 22:36:21,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693344322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:21,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:21,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:36:21,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706572305] [2021-11-03 22:36:21,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:36:21,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:21,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:36:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:36:21,211 INFO L87 Difference]: Start difference. First operand 359 states and 414 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-03 22:36:23,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:26,710 INFO L93 Difference]: Finished difference Result 713 states and 838 transitions. [2021-11-03 22:36:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 22:36:26,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 85 [2021-11-03 22:36:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:26,712 INFO L225 Difference]: With dead ends: 713 [2021-11-03 22:36:26,712 INFO L226 Difference]: Without dead ends: 519 [2021-11-03 22:36:26,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 278.67ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:36:26,713 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 324 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4904.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5305.47ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:26,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 0 Invalid, 933 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [15 Valid, 917 Invalid, 1 Unknown, 0 Unchecked, 5305.47ms Time] [2021-11-03 22:36:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-03 22:36:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 359. [2021-11-03 22:36:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 348 states have (on average 1.1839080459770115) internal successors, (412), 358 states have internal predecessors, (412), 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) [2021-11-03 22:36:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 412 transitions. [2021-11-03 22:36:26,723 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 412 transitions. Word has length 85 [2021-11-03 22:36:26,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:26,724 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 412 transitions. [2021-11-03 22:36:26,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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) [2021-11-03 22:36:26,724 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 412 transitions. [2021-11-03 22:36:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:36:26,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:26,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:26,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 22:36:26,725 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:26,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1724877575, now seen corresponding path program 1 times [2021-11-03 22:36:26,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:26,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119077943] [2021-11-03 22:36:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:26,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:29,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:29,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119077943] [2021-11-03 22:36:29,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119077943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:29,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:29,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-03 22:36:29,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73931722] [2021-11-03 22:36:29,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:29,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-03 22:36:29,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:29,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-03 22:36:29,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:36:29,371 INFO L87 Difference]: Start difference. First operand 359 states and 412 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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) [2021-11-03 22:36:32,164 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:40,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:40,648 INFO L93 Difference]: Finished difference Result 579 states and 666 transitions. [2021-11-03 22:36:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 22:36:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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 85 [2021-11-03 22:36:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:40,650 INFO L225 Difference]: With dead ends: 579 [2021-11-03 22:36:40,650 INFO L226 Difference]: Without dead ends: 444 [2021-11-03 22:36:40,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1811.26ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:36:40,651 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1062 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 52 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9277.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.78ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9995.78ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:40,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 0 Invalid, 2439 Unknown, 0 Unchecked, 24.78ms Time], IncrementalHoareTripleChecker [52 Valid, 2386 Invalid, 1 Unknown, 0 Unchecked, 9995.78ms Time] [2021-11-03 22:36:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-03 22:36:40,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 355. [2021-11-03 22:36:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 344 states have (on average 1.1744186046511629) internal successors, (404), 354 states have internal predecessors, (404), 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) [2021-11-03 22:36:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 404 transitions. [2021-11-03 22:36:40,673 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 404 transitions. Word has length 85 [2021-11-03 22:36:40,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:40,673 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 404 transitions. [2021-11-03 22:36:40,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 15 states have internal predecessors, (85), 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) [2021-11-03 22:36:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 404 transitions. [2021-11-03 22:36:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:36:40,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:40,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:40,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 22:36:40,674 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1137079539, now seen corresponding path program 1 times [2021-11-03 22:36:40,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:40,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172758798] [2021-11-03 22:36:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:40,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:41,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:41,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172758798] [2021-11-03 22:36:41,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172758798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:41,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:41,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-03 22:36:41,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059807166] [2021-11-03 22:36:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:41,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 22:36:41,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:41,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 22:36:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:36:41,095 INFO L87 Difference]: Start difference. First operand 355 states and 404 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-11-03 22:36:43,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:36:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:36:49,366 INFO L93 Difference]: Finished difference Result 727 states and 845 transitions. [2021-11-03 22:36:49,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:36:49,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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 85 [2021-11-03 22:36:49,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:36:49,368 INFO L225 Difference]: With dead ends: 727 [2021-11-03 22:36:49,368 INFO L226 Difference]: Without dead ends: 622 [2021-11-03 22:36:49,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 894.49ms TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:36:49,368 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 525 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6941.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.99ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7506.38ms IncrementalHoareTripleChecker+Time [2021-11-03 22:36:49,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 0 Invalid, 1763 Unknown, 0 Unchecked, 12.99ms Time], IncrementalHoareTripleChecker [36 Valid, 1726 Invalid, 1 Unknown, 0 Unchecked, 7506.38ms Time] [2021-11-03 22:36:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-03 22:36:49,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 372. [2021-11-03 22:36:49,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 361 states have (on average 1.1745152354570638) internal successors, (424), 371 states have internal predecessors, (424), 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) [2021-11-03 22:36:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 424 transitions. [2021-11-03 22:36:49,378 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 424 transitions. Word has length 85 [2021-11-03 22:36:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:36:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 424 transitions. [2021-11-03 22:36:49,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 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) [2021-11-03 22:36:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 424 transitions. [2021-11-03 22:36:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:36:49,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:36:49,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:36:49,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 22:36:49,379 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:36:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:36:49,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1817137909, now seen corresponding path program 1 times [2021-11-03 22:36:49,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:36:49,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188431368] [2021-11-03 22:36:49,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:36:49,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:36:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:36:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:36:52,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:36:52,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188431368] [2021-11-03 22:36:52,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188431368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:36:52,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:36:52,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:36:52,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941353432] [2021-11-03 22:36:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:36:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:36:52,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:36:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:36:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:36:52,649 INFO L87 Difference]: Start difference. First operand 372 states and 424 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-11-03 22:36:54,694 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 [] [2021-11-03 22:37:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:02,323 INFO L93 Difference]: Finished difference Result 575 states and 657 transitions. [2021-11-03 22:37:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:37:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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 85 [2021-11-03 22:37:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:02,325 INFO L225 Difference]: With dead ends: 575 [2021-11-03 22:37:02,325 INFO L226 Difference]: Without dead ends: 459 [2021-11-03 22:37:02,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1974.35ms TimeCoverageRelationStatistics Valid=187, Invalid=413, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:37:02,326 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1102 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 89 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7602.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.49ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8161.94ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:02,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 0 Invalid, 2041 Unknown, 0 Unchecked, 21.49ms Time], IncrementalHoareTripleChecker [89 Valid, 1951 Invalid, 1 Unknown, 0 Unchecked, 8161.94ms Time] [2021-11-03 22:37:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-03 22:37:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 390. [2021-11-03 22:37:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 379 states have (on average 1.1688654353562005) internal successors, (443), 389 states have internal predecessors, (443), 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) [2021-11-03 22:37:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 443 transitions. [2021-11-03 22:37:02,337 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 443 transitions. Word has length 85 [2021-11-03 22:37:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:02,337 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 443 transitions. [2021-11-03 22:37:02,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 13 states have internal predecessors, (85), 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) [2021-11-03 22:37:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 443 transitions. [2021-11-03 22:37:02,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:37:02,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:02,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:02,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 22:37:02,339 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash 353688179, now seen corresponding path program 1 times [2021-11-03 22:37:02,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:02,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864633250] [2021-11-03 22:37:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:02,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:03,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:03,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864633250] [2021-11-03 22:37:03,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864633250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:03,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:03,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:37:03,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533437128] [2021-11-03 22:37:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:03,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:37:03,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:37:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:37:03,014 INFO L87 Difference]: Start difference. First operand 390 states and 443 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2021-11-03 22:37:05,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:10,474 INFO L93 Difference]: Finished difference Result 663 states and 755 transitions. [2021-11-03 22:37:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:37:10,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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 85 [2021-11-03 22:37:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:10,476 INFO L225 Difference]: With dead ends: 663 [2021-11-03 22:37:10,476 INFO L226 Difference]: Without dead ends: 473 [2021-11-03 22:37:10,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1317.38ms TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:37:10,477 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 866 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5921.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.28ms SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6381.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:10,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 0 Invalid, 1374 Unknown, 0 Unchecked, 15.28ms Time], IncrementalHoareTripleChecker [64 Valid, 1309 Invalid, 1 Unknown, 0 Unchecked, 6381.31ms Time] [2021-11-03 22:37:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-03 22:37:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 408. [2021-11-03 22:37:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 1.1612090680100755) internal successors, (461), 407 states have internal predecessors, (461), 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) [2021-11-03 22:37:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 461 transitions. [2021-11-03 22:37:10,487 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 461 transitions. Word has length 85 [2021-11-03 22:37:10,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:10,487 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 461 transitions. [2021-11-03 22:37:10,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 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) [2021-11-03 22:37:10,487 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 461 transitions. [2021-11-03 22:37:10,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:37:10,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:10,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:10,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 22:37:10,488 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:10,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1192781619, now seen corresponding path program 1 times [2021-11-03 22:37:10,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:10,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735054616] [2021-11-03 22:37:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:10,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:14,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:14,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735054616] [2021-11-03 22:37:14,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735054616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:14,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:14,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-03 22:37:14,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7470789] [2021-11-03 22:37:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:14,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-03 22:37:14,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-03 22:37:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-11-03 22:37:14,778 INFO L87 Difference]: Start difference. First operand 408 states and 461 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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) [2021-11-03 22:37:17,622 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:37:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:38,253 INFO L93 Difference]: Finished difference Result 693 states and 769 transitions. [2021-11-03 22:37:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-03 22:37:38,254 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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 85 [2021-11-03 22:37:38,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:38,256 INFO L225 Difference]: With dead ends: 693 [2021-11-03 22:37:38,256 INFO L226 Difference]: Without dead ends: 627 [2021-11-03 22:37:38,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 6166.43ms TimeCoverageRelationStatistics Valid=608, Invalid=2584, Unknown=0, NotChecked=0, Total=3192 [2021-11-03 22:37:38,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1253 mSDsluCounter, 3700 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 101 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17846.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.04ms SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18948.34ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:38,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 0 Invalid, 6084 Unknown, 0 Unchecked, 50.04ms Time], IncrementalHoareTripleChecker [101 Valid, 5982 Invalid, 1 Unknown, 0 Unchecked, 18948.34ms Time] [2021-11-03 22:37:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-03 22:37:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 408. [2021-11-03 22:37:38,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 397 states have (on average 1.1612090680100755) internal successors, (461), 407 states have internal predecessors, (461), 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) [2021-11-03 22:37:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 461 transitions. [2021-11-03 22:37:38,269 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 461 transitions. Word has length 85 [2021-11-03 22:37:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:38,269 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 461 transitions. [2021-11-03 22:37:38,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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) [2021-11-03 22:37:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 461 transitions. [2021-11-03 22:37:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 22:37:38,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:38,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:38,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 22:37:38,270 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:38,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash -395566283, now seen corresponding path program 1 times [2021-11-03 22:37:38,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:38,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338898281] [2021-11-03 22:37:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:38,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:41,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:41,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338898281] [2021-11-03 22:37:41,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338898281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:41,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:41,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:37:41,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935497663] [2021-11-03 22:37:41,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:37:41,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:37:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:37:41,682 INFO L87 Difference]: Start difference. First operand 408 states and 461 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-03 22:37:43,727 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 [] [2021-11-03 22:37:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:37:53,142 INFO L93 Difference]: Finished difference Result 543 states and 605 transitions. [2021-11-03 22:37:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 22:37:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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 85 [2021-11-03 22:37:53,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:37:53,144 INFO L225 Difference]: With dead ends: 543 [2021-11-03 22:37:53,144 INFO L226 Difference]: Without dead ends: 477 [2021-11-03 22:37:53,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2969.44ms TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2021-11-03 22:37:53,145 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1116 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 2574 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8522.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.96ms SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9127.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:37:53,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 0 Invalid, 2660 Unknown, 0 Unchecked, 24.96ms Time], IncrementalHoareTripleChecker [85 Valid, 2574 Invalid, 1 Unknown, 0 Unchecked, 9127.30ms Time] [2021-11-03 22:37:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-03 22:37:53,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 398. [2021-11-03 22:37:53,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 387 states have (on average 1.1602067183462532) internal successors, (449), 397 states have internal predecessors, (449), 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) [2021-11-03 22:37:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 449 transitions. [2021-11-03 22:37:53,155 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 449 transitions. Word has length 85 [2021-11-03 22:37:53,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:37:53,156 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 449 transitions. [2021-11-03 22:37:53,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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) [2021-11-03 22:37:53,156 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 449 transitions. [2021-11-03 22:37:53,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:37:53,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:37:53,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:37:53,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 22:37:53,157 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:37:53,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:37:53,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1366130194, now seen corresponding path program 1 times [2021-11-03 22:37:53,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:37:53,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187690443] [2021-11-03 22:37:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:37:53,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:37:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:37:53,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:37:53,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:37:53,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187690443] [2021-11-03 22:37:53,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187690443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:37:53,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:37:53,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 22:37:53,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803610631] [2021-11-03 22:37:53,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:37:53,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 22:37:53,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:37:53,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 22:37:53,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:37:53,623 INFO L87 Difference]: Start difference. First operand 398 states and 449 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2021-11-03 22:37:56,641 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:01,707 INFO L93 Difference]: Finished difference Result 560 states and 636 transitions. [2021-11-03 22:38:01,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 22:38:01,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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 87 [2021-11-03 22:38:01,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:01,709 INFO L225 Difference]: With dead ends: 560 [2021-11-03 22:38:01,709 INFO L226 Difference]: Without dead ends: 543 [2021-11-03 22:38:01,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 582.04ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:38:01,709 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7009.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.98ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7617.34ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:01,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 1466 Unknown, 0 Unchecked, 11.98ms Time], IncrementalHoareTripleChecker [88 Valid, 1377 Invalid, 1 Unknown, 0 Unchecked, 7617.34ms Time] [2021-11-03 22:38:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-11-03 22:38:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 414. [2021-11-03 22:38:01,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 403 states have (on average 1.15136476426799) internal successors, (464), 413 states have internal predecessors, (464), 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) [2021-11-03 22:38:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 464 transitions. [2021-11-03 22:38:01,735 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 464 transitions. Word has length 87 [2021-11-03 22:38:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:01,735 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 464 transitions. [2021-11-03 22:38:01,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2021-11-03 22:38:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 464 transitions. [2021-11-03 22:38:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:38:01,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:01,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:01,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 22:38:01,736 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2119490476, now seen corresponding path program 1 times [2021-11-03 22:38:01,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:01,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187131617] [2021-11-03 22:38:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:01,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:02,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:02,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187131617] [2021-11-03 22:38:02,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187131617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:02,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:02,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:38:02,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085766956] [2021-11-03 22:38:02,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:02,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:38:02,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:02,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:38:02,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:38:02,040 INFO L87 Difference]: Start difference. First operand 414 states and 464 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2021-11-03 22:38:05,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:09,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:09,017 INFO L93 Difference]: Finished difference Result 680 states and 775 transitions. [2021-11-03 22:38:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:38:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 87 [2021-11-03 22:38:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:09,020 INFO L225 Difference]: With dead ends: 680 [2021-11-03 22:38:09,020 INFO L226 Difference]: Without dead ends: 568 [2021-11-03 22:38:09,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 317.69ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:38:09,021 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 422 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6183.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.23ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6720.86ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:09,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 0 Invalid, 1136 Unknown, 0 Unchecked, 10.23ms Time], IncrementalHoareTripleChecker [22 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 6720.86ms Time] [2021-11-03 22:38:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-11-03 22:38:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 426. [2021-11-03 22:38:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 415 states have (on average 1.1493975903614457) internal successors, (477), 425 states have internal predecessors, (477), 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) [2021-11-03 22:38:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 477 transitions. [2021-11-03 22:38:09,041 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 477 transitions. Word has length 87 [2021-11-03 22:38:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:09,041 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 477 transitions. [2021-11-03 22:38:09,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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) [2021-11-03 22:38:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 477 transitions. [2021-11-03 22:38:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-03 22:38:09,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:09,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:09,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 22:38:09,042 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:09,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:09,043 INFO L85 PathProgramCache]: Analyzing trace with hash -185385492, now seen corresponding path program 1 times [2021-11-03 22:38:09,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:09,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399171252] [2021-11-03 22:38:09,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:09,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:13,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:13,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399171252] [2021-11-03 22:38:13,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399171252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:13,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:13,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-03 22:38:13,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606208064] [2021-11-03 22:38:13,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:13,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 22:38:13,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 22:38:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:38:13,911 INFO L87 Difference]: Start difference. First operand 426 states and 477 transitions. Second operand has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 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) [2021-11-03 22:38:16,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:38:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:40,742 INFO L93 Difference]: Finished difference Result 750 states and 835 transitions. [2021-11-03 22:38:40,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-03 22:38:40,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 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 87 [2021-11-03 22:38:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:40,744 INFO L225 Difference]: With dead ends: 750 [2021-11-03 22:38:40,744 INFO L226 Difference]: Without dead ends: 746 [2021-11-03 22:38:40,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 10109.62ms TimeCoverageRelationStatistics Valid=793, Invalid=5059, Unknown=0, NotChecked=0, Total=5852 [2021-11-03 22:38:40,746 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1137 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 338 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17226.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.49ms SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18284.59ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:40,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 0 Invalid, 5927 Unknown, 0 Unchecked, 49.49ms Time], IncrementalHoareTripleChecker [338 Valid, 5588 Invalid, 1 Unknown, 0 Unchecked, 18284.59ms Time] [2021-11-03 22:38:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-03 22:38:40,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 451. [2021-11-03 22:38:40,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 440 states have (on average 1.1477272727272727) internal successors, (505), 450 states have internal predecessors, (505), 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) [2021-11-03 22:38:40,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 505 transitions. [2021-11-03 22:38:40,761 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 505 transitions. Word has length 87 [2021-11-03 22:38:40,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:40,762 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 505 transitions. [2021-11-03 22:38:40,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.625) internal successors, (87), 24 states have internal predecessors, (87), 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) [2021-11-03 22:38:40,762 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 505 transitions. [2021-11-03 22:38:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:38:40,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:40,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:40,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 22:38:40,763 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:40,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:40,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1174403238, now seen corresponding path program 1 times [2021-11-03 22:38:40,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:40,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467305961] [2021-11-03 22:38:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:40,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:41,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:41,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467305961] [2021-11-03 22:38:41,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467305961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:41,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-03 22:38:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526847782] [2021-11-03 22:38:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:41,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 22:38:41,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 22:38:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:38:41,448 INFO L87 Difference]: Start difference. First operand 451 states and 505 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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) [2021-11-03 22:38:43,491 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 [] [2021-11-03 22:38:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:38:48,271 INFO L93 Difference]: Finished difference Result 673 states and 759 transitions. [2021-11-03 22:38:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 22:38:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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 88 [2021-11-03 22:38:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:38:48,272 INFO L225 Difference]: With dead ends: 673 [2021-11-03 22:38:48,272 INFO L226 Difference]: Without dead ends: 430 [2021-11-03 22:38:48,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 817.11ms TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:38:48,273 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 545 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5822.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.73ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6225.06ms IncrementalHoareTripleChecker+Time [2021-11-03 22:38:48,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 0 Invalid, 1413 Unknown, 0 Unchecked, 12.73ms Time], IncrementalHoareTripleChecker [27 Valid, 1385 Invalid, 1 Unknown, 0 Unchecked, 6225.06ms Time] [2021-11-03 22:38:48,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-03 22:38:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 417. [2021-11-03 22:38:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 406 states have (on average 1.145320197044335) internal successors, (465), 416 states have internal predecessors, (465), 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) [2021-11-03 22:38:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 465 transitions. [2021-11-03 22:38:48,286 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 465 transitions. Word has length 88 [2021-11-03 22:38:48,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:38:48,286 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 465 transitions. [2021-11-03 22:38:48,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 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) [2021-11-03 22:38:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 465 transitions. [2021-11-03 22:38:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:38:48,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:38:48,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:38:48,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 22:38:48,287 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:38:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:38:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1699629160, now seen corresponding path program 1 times [2021-11-03 22:38:48,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:38:48,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4939610] [2021-11-03 22:38:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:38:48,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:38:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:38:51,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:38:51,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:38:51,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4939610] [2021-11-03 22:38:51,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4939610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:38:51,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:38:51,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:38:51,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572949273] [2021-11-03 22:38:51,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:38:51,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:38:51,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:38:51,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:38:51,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:38:51,171 INFO L87 Difference]: Start difference. First operand 417 states and 465 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-11-03 22:38:53,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:39:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:01,117 INFO L93 Difference]: Finished difference Result 613 states and 682 transitions. [2021-11-03 22:39:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-03 22:39:01,117 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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 88 [2021-11-03 22:39:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:01,118 INFO L225 Difference]: With dead ends: 613 [2021-11-03 22:39:01,118 INFO L226 Difference]: Without dead ends: 506 [2021-11-03 22:39:01,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2081.31ms TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2021-11-03 22:39:01,119 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 867 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7806.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.26ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8433.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:01,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 0 Invalid, 1948 Unknown, 0 Unchecked, 19.26ms Time], IncrementalHoareTripleChecker [56 Valid, 1891 Invalid, 1 Unknown, 0 Unchecked, 8433.61ms Time] [2021-11-03 22:39:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-03 22:39:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 416. [2021-11-03 22:39:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 405 states have (on average 1.1407407407407408) internal successors, (462), 415 states have internal predecessors, (462), 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) [2021-11-03 22:39:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 462 transitions. [2021-11-03 22:39:01,133 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 462 transitions. Word has length 88 [2021-11-03 22:39:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:01,133 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 462 transitions. [2021-11-03 22:39:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-11-03 22:39:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 462 transitions. [2021-11-03 22:39:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:39:01,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:01,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:01,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-03 22:39:01,134 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 904162516, now seen corresponding path program 1 times [2021-11-03 22:39:01,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:01,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778542574] [2021-11-03 22:39:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:01,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:06,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:06,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778542574] [2021-11-03 22:39:06,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778542574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:06,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:06,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-03 22:39:06,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201301283] [2021-11-03 22:39:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:06,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-03 22:39:06,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-03 22:39:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:39:06,878 INFO L87 Difference]: Start difference. First operand 416 states and 462 transitions. Second operand has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 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) [2021-11-03 22:39:08,919 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 [] [2021-11-03 22:39:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:27,419 INFO L93 Difference]: Finished difference Result 1010 states and 1141 transitions. [2021-11-03 22:39:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-03 22:39:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 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 88 [2021-11-03 22:39:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:27,422 INFO L225 Difference]: With dead ends: 1010 [2021-11-03 22:39:27,422 INFO L226 Difference]: Without dead ends: 937 [2021-11-03 22:39:27,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 8912.79ms TimeCoverageRelationStatistics Valid=899, Invalid=2181, Unknown=0, NotChecked=0, Total=3080 [2021-11-03 22:39:27,423 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2780 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12250.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.01ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13054.74ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:27,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 0 Invalid, 3823 Unknown, 0 Unchecked, 41.01ms Time], IncrementalHoareTripleChecker [165 Valid, 3657 Invalid, 1 Unknown, 0 Unchecked, 13054.74ms Time] [2021-11-03 22:39:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-03 22:39:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 524. [2021-11-03 22:39:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 513 states have (on average 1.1734892787524367) internal successors, (602), 523 states have internal predecessors, (602), 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) [2021-11-03 22:39:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 602 transitions. [2021-11-03 22:39:27,443 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 602 transitions. Word has length 88 [2021-11-03 22:39:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:27,443 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 602 transitions. [2021-11-03 22:39:27,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 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) [2021-11-03 22:39:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 602 transitions. [2021-11-03 22:39:27,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:39:27,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:27,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:27,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-03 22:39:27,444 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:27,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1584220886, now seen corresponding path program 1 times [2021-11-03 22:39:27,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:27,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010359430] [2021-11-03 22:39:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:27,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:33,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:33,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010359430] [2021-11-03 22:39:33,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010359430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:33,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:33,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-03 22:39:33,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776436427] [2021-11-03 22:39:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:33,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-03 22:39:33,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:33,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-03 22:39:33,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:39:33,312 INFO L87 Difference]: Start difference. First operand 524 states and 602 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-11-03 22:39:36,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:39:41,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:41,881 INFO L93 Difference]: Finished difference Result 734 states and 844 transitions. [2021-11-03 22:39:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 22:39:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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 88 [2021-11-03 22:39:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:41,883 INFO L225 Difference]: With dead ends: 734 [2021-11-03 22:39:41,883 INFO L226 Difference]: Without dead ends: 608 [2021-11-03 22:39:41,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1590.87ms TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-03 22:39:41,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 594 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6943.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.65ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7514.01ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:41,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 0 Invalid, 1815 Unknown, 0 Unchecked, 14.65ms Time], IncrementalHoareTripleChecker [74 Valid, 1740 Invalid, 1 Unknown, 0 Unchecked, 7514.01ms Time] [2021-11-03 22:39:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-11-03 22:39:41,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 525. [2021-11-03 22:39:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 514 states have (on average 1.1692607003891051) internal successors, (601), 524 states have internal predecessors, (601), 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) [2021-11-03 22:39:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 601 transitions. [2021-11-03 22:39:41,900 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 601 transitions. Word has length 88 [2021-11-03 22:39:41,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:41,900 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 601 transitions. [2021-11-03 22:39:41,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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) [2021-11-03 22:39:41,901 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 601 transitions. [2021-11-03 22:39:41,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-03 22:39:41,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:41,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:41,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-03 22:39:41,901 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:41,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash -684185386, now seen corresponding path program 1 times [2021-11-03 22:39:41,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:41,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060883882] [2021-11-03 22:39:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:41,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:39:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:39:45,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:39:45,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060883882] [2021-11-03 22:39:45,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060883882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:39:45,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:39:45,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-03 22:39:45,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109310329] [2021-11-03 22:39:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:39:45,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-03 22:39:45,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:39:45,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-03 22:39:45,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-03 22:39:45,591 INFO L87 Difference]: Start difference. First operand 525 states and 601 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2021-11-03 22:39:48,550 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:39:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:39:54,825 INFO L93 Difference]: Finished difference Result 791 states and 912 transitions. [2021-11-03 22:39:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:39:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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 88 [2021-11-03 22:39:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:39:54,828 INFO L225 Difference]: With dead ends: 791 [2021-11-03 22:39:54,828 INFO L226 Difference]: Without dead ends: 718 [2021-11-03 22:39:54,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1781.97ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:39:54,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1113 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 60 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7510.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.46ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8130.44ms IncrementalHoareTripleChecker+Time [2021-11-03 22:39:54,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 0 Invalid, 1749 Unknown, 0 Unchecked, 17.46ms Time], IncrementalHoareTripleChecker [60 Valid, 1688 Invalid, 1 Unknown, 0 Unchecked, 8130.44ms Time] [2021-11-03 22:39:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-03 22:39:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 525. [2021-11-03 22:39:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 514 states have (on average 1.1673151750972763) internal successors, (600), 524 states have internal predecessors, (600), 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) [2021-11-03 22:39:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 600 transitions. [2021-11-03 22:39:54,850 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 600 transitions. Word has length 88 [2021-11-03 22:39:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:39:54,850 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 600 transitions. [2021-11-03 22:39:54,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 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) [2021-11-03 22:39:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 600 transitions. [2021-11-03 22:39:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 22:39:54,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:39:54,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:39:54,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 22:39:54,851 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:39:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:39:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1624530765, now seen corresponding path program 1 times [2021-11-03 22:39:54,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:39:54,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394638691] [2021-11-03 22:39:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:39:54,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:39:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:00,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:00,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394638691] [2021-11-03 22:40:00,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394638691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:00,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:00,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-03 22:40:00,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254129526] [2021-11-03 22:40:00,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:00,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 22:40:00,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 22:40:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-11-03 22:40:00,721 INFO L87 Difference]: Start difference. First operand 525 states and 600 transitions. Second operand has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 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) [2021-11-03 22:40:03,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:19,011 INFO L93 Difference]: Finished difference Result 715 states and 811 transitions. [2021-11-03 22:40:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:40:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 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 90 [2021-11-03 22:40:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:19,012 INFO L225 Difference]: With dead ends: 715 [2021-11-03 22:40:19,013 INFO L226 Difference]: Without dead ends: 535 [2021-11-03 22:40:19,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 4033.84ms TimeCoverageRelationStatistics Valid=250, Invalid=806, Unknown=0, NotChecked=0, Total=1056 [2021-11-03 22:40:19,014 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 763 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14535.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.26ms SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15556.18ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:19,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 0 Invalid, 3990 Unknown, 0 Unchecked, 40.26ms Time], IncrementalHoareTripleChecker [62 Valid, 3927 Invalid, 1 Unknown, 0 Unchecked, 15556.18ms Time] [2021-11-03 22:40:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-03 22:40:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 470. [2021-11-03 22:40:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 459 states have (on average 1.1481481481481481) internal successors, (527), 469 states have internal predecessors, (527), 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) [2021-11-03 22:40:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 527 transitions. [2021-11-03 22:40:19,032 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 527 transitions. Word has length 90 [2021-11-03 22:40:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:19,032 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 527 transitions. [2021-11-03 22:40:19,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 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) [2021-11-03 22:40:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 527 transitions. [2021-11-03 22:40:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-03 22:40:19,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:19,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 22:40:19,033 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:40:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -64412977, now seen corresponding path program 1 times [2021-11-03 22:40:19,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:19,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052613496] [2021-11-03 22:40:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:19,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:23,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:23,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052613496] [2021-11-03 22:40:23,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052613496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:23,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:23,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-03 22:40:23,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55438120] [2021-11-03 22:40:23,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:23,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-03 22:40:23,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-03 22:40:23,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-03 22:40:23,081 INFO L87 Difference]: Start difference. First operand 470 states and 527 transitions. Second operand has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-11-03 22:40:25,125 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 [] [2021-11-03 22:40:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:37,395 INFO L93 Difference]: Finished difference Result 738 states and 833 transitions. [2021-11-03 22:40:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-03 22:40:37,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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 90 [2021-11-03 22:40:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:37,397 INFO L225 Difference]: With dead ends: 738 [2021-11-03 22:40:37,397 INFO L226 Difference]: Without dead ends: 734 [2021-11-03 22:40:37,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 5996.33ms TimeCoverageRelationStatistics Valid=551, Invalid=2871, Unknown=0, NotChecked=0, Total=3422 [2021-11-03 22:40:37,398 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1058 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 178 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8304.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.03ms SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9091.65ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:37,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 0 Invalid, 2564 Unknown, 0 Unchecked, 24.03ms Time], IncrementalHoareTripleChecker [178 Valid, 2385 Invalid, 1 Unknown, 0 Unchecked, 9091.65ms Time] [2021-11-03 22:40:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-03 22:40:37,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 444. [2021-11-03 22:40:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 434 states have (on average 1.152073732718894) internal successors, (500), 443 states have internal predecessors, (500), 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) [2021-11-03 22:40:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 500 transitions. [2021-11-03 22:40:37,414 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 500 transitions. Word has length 90 [2021-11-03 22:40:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:37,414 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 500 transitions. [2021-11-03 22:40:37,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.0) internal successors, (90), 18 states have internal predecessors, (90), 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) [2021-11-03 22:40:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 500 transitions. [2021-11-03 22:40:37,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-03 22:40:37,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:37,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:37,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-03 22:40:37,415 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:40:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:37,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1192526857, now seen corresponding path program 1 times [2021-11-03 22:40:37,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:37,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988004150] [2021-11-03 22:40:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:37,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:37,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:37,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988004150] [2021-11-03 22:40:37,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988004150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:37,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:37,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:40:37,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127249857] [2021-11-03 22:40:37,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:37,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:40:37,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:37,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:40:37,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:40:37,598 INFO L87 Difference]: Start difference. First operand 444 states and 500 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2021-11-03 22:40:40,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:43,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:43,364 INFO L93 Difference]: Finished difference Result 584 states and 662 transitions. [2021-11-03 22:40:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:40:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 92 [2021-11-03 22:40:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:43,366 INFO L225 Difference]: With dead ends: 584 [2021-11-03 22:40:43,366 INFO L226 Difference]: Without dead ends: 516 [2021-11-03 22:40:43,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.52ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:40:43,366 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5144.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.49ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5657.05ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:43,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 5.49ms Time], IncrementalHoareTripleChecker [2 Valid, 799 Invalid, 1 Unknown, 0 Unchecked, 5657.05ms Time] [2021-11-03 22:40:43,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-11-03 22:40:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 444. [2021-11-03 22:40:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 434 states have (on average 1.1428571428571428) internal successors, (496), 443 states have internal predecessors, (496), 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) [2021-11-03 22:40:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 496 transitions. [2021-11-03 22:40:43,383 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 496 transitions. Word has length 92 [2021-11-03 22:40:43,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:43,383 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 496 transitions. [2021-11-03 22:40:43,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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) [2021-11-03 22:40:43,383 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 496 transitions. [2021-11-03 22:40:43,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-03 22:40:43,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:43,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:43,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-03 22:40:43,384 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:40:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1685477897, now seen corresponding path program 1 times [2021-11-03 22:40:43,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:43,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181477087] [2021-11-03 22:40:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:43,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:43,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:43,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181477087] [2021-11-03 22:40:43,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181477087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:43,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:43,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 22:40:43,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356788763] [2021-11-03 22:40:43,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:43,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:40:43,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:43,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:40:43,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:40:43,739 INFO L87 Difference]: Start difference. First operand 444 states and 496 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2021-11-03 22:40:45,782 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 [] [2021-11-03 22:40:47,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:47,718 INFO L93 Difference]: Finished difference Result 478 states and 533 transitions. [2021-11-03 22:40:47,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:40:47,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 93 [2021-11-03 22:40:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:47,719 INFO L225 Difference]: With dead ends: 478 [2021-11-03 22:40:47,719 INFO L226 Difference]: Without dead ends: 476 [2021-11-03 22:40:47,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 172.99ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 22:40:47,720 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 367 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3531.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.13ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3862.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:47,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 0 Invalid, 600 Unknown, 0 Unchecked, 5.13ms Time], IncrementalHoareTripleChecker [3 Valid, 596 Invalid, 1 Unknown, 0 Unchecked, 3862.72ms Time] [2021-11-03 22:40:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-03 22:40:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 442. [2021-11-03 22:40:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 433 states have (on average 1.136258660508083) internal successors, (492), 441 states have internal predecessors, (492), 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) [2021-11-03 22:40:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 492 transitions. [2021-11-03 22:40:47,737 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 492 transitions. Word has length 93 [2021-11-03 22:40:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:47,737 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 492 transitions. [2021-11-03 22:40:47,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2021-11-03 22:40:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 492 transitions. [2021-11-03 22:40:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 22:40:47,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:47,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:47,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-03 22:40:47,738 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:40:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:47,738 INFO L85 PathProgramCache]: Analyzing trace with hash -541449895, now seen corresponding path program 1 times [2021-11-03 22:40:47,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:47,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771403170] [2021-11-03 22:40:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:47,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:48,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:48,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771403170] [2021-11-03 22:40:48,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771403170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:48,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:48,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:40:48,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371888882] [2021-11-03 22:40:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:48,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:40:48,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:40:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:40:48,614 INFO L87 Difference]: Start difference. First operand 442 states and 492 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2021-11-03 22:40:51,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:40:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:40:58,065 INFO L93 Difference]: Finished difference Result 552 states and 610 transitions. [2021-11-03 22:40:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:40:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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 95 [2021-11-03 22:40:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:40:58,067 INFO L225 Difference]: With dead ends: 552 [2021-11-03 22:40:58,067 INFO L226 Difference]: Without dead ends: 550 [2021-11-03 22:40:58,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1426.93ms TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2021-11-03 22:40:58,067 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 614 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7784.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.03ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8376.97ms IncrementalHoareTripleChecker+Time [2021-11-03 22:40:58,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 0 Invalid, 2149 Unknown, 0 Unchecked, 15.03ms Time], IncrementalHoareTripleChecker [38 Valid, 2110 Invalid, 1 Unknown, 0 Unchecked, 8376.97ms Time] [2021-11-03 22:40:58,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-03 22:40:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 456. [2021-11-03 22:40:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 447 states have (on average 1.1342281879194631) internal successors, (507), 455 states have internal predecessors, (507), 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) [2021-11-03 22:40:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 507 transitions. [2021-11-03 22:40:58,086 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 507 transitions. Word has length 95 [2021-11-03 22:40:58,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:40:58,086 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 507 transitions. [2021-11-03 22:40:58,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2021-11-03 22:40:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 507 transitions. [2021-11-03 22:40:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 22:40:58,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:40:58,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:40:58,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-03 22:40:58,087 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:40:58,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:40:58,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2059414454, now seen corresponding path program 1 times [2021-11-03 22:40:58,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:40:58,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951819401] [2021-11-03 22:40:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:40:58,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:40:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:40:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:40:58,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:40:58,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951819401] [2021-11-03 22:40:58,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951819401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:40:58,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:40:58,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-03 22:40:58,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042330415] [2021-11-03 22:40:58,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:40:58,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:40:58,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:40:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:40:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:40:58,385 INFO L87 Difference]: Start difference. First operand 456 states and 507 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-11-03 22:41:00,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:41:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:02,694 INFO L93 Difference]: Finished difference Result 604 states and 675 transitions. [2021-11-03 22:41:02,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:41:02,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 95 [2021-11-03 22:41:02,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:02,696 INFO L225 Difference]: With dead ends: 604 [2021-11-03 22:41:02,696 INFO L226 Difference]: Without dead ends: 458 [2021-11-03 22:41:02,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.64ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:41:02,697 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 219 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3844.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4218.19ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:02,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 0 Invalid, 700 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [2 Valid, 697 Invalid, 1 Unknown, 0 Unchecked, 4218.19ms Time] [2021-11-03 22:41:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-03 22:41:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 402. [2021-11-03 22:41:02,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 393 states have (on average 1.1246819338422391) internal successors, (442), 401 states have internal predecessors, (442), 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) [2021-11-03 22:41:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 442 transitions. [2021-11-03 22:41:02,713 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 442 transitions. Word has length 95 [2021-11-03 22:41:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:02,713 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 442 transitions. [2021-11-03 22:41:02,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-11-03 22:41:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 442 transitions. [2021-11-03 22:41:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 22:41:02,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:02,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:02,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-03 22:41:02,714 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:41:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 468861849, now seen corresponding path program 1 times [2021-11-03 22:41:02,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:02,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124869434] [2021-11-03 22:41:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:02,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:03,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:03,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124869434] [2021-11-03 22:41:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124869434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:03,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:03,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 22:41:03,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282204187] [2021-11-03 22:41:03,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:03,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:41:03,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:41:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:41:03,067 INFO L87 Difference]: Start difference. First operand 402 states and 442 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2021-11-03 22:41:05,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:41:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:09,265 INFO L93 Difference]: Finished difference Result 624 states and 696 transitions. [2021-11-03 22:41:09,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:41:09,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 95 [2021-11-03 22:41:09,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:09,267 INFO L225 Difference]: With dead ends: 624 [2021-11-03 22:41:09,267 INFO L226 Difference]: Without dead ends: 500 [2021-11-03 22:41:09,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 415.09ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 22:41:09,267 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 373 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5444.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.98ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5875.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:09,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 0 Invalid, 1336 Unknown, 0 Unchecked, 9.98ms Time], IncrementalHoareTripleChecker [19 Valid, 1316 Invalid, 1 Unknown, 0 Unchecked, 5875.63ms Time] [2021-11-03 22:41:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-03 22:41:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 402. [2021-11-03 22:41:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 393 states have (on average 1.1170483460559797) internal successors, (439), 401 states have internal predecessors, (439), 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) [2021-11-03 22:41:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 439 transitions. [2021-11-03 22:41:09,284 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 439 transitions. Word has length 95 [2021-11-03 22:41:09,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:09,284 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 439 transitions. [2021-11-03 22:41:09,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2021-11-03 22:41:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 439 transitions. [2021-11-03 22:41:09,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-03 22:41:09,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:09,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:09,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-03 22:41:09,285 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:41:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:09,285 INFO L85 PathProgramCache]: Analyzing trace with hash -552206505, now seen corresponding path program 1 times [2021-11-03 22:41:09,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:09,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918972441] [2021-11-03 22:41:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:09,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:10,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:10,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:10,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918972441] [2021-11-03 22:41:10,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918972441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:10,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:10,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-03 22:41:10,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325901839] [2021-11-03 22:41:10,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:41:10,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:10,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:41:10,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:41:10,556 INFO L87 Difference]: Start difference. First operand 402 states and 439 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2021-11-03 22:41:12,600 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 [] [2021-11-03 22:41:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:19,456 INFO L93 Difference]: Finished difference Result 454 states and 490 transitions. [2021-11-03 22:41:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 22:41:19,456 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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 95 [2021-11-03 22:41:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:19,457 INFO L225 Difference]: With dead ends: 454 [2021-11-03 22:41:19,457 INFO L226 Difference]: Without dead ends: 452 [2021-11-03 22:41:19,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1372.51ms TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2021-11-03 22:41:19,458 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 457 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7446.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.92ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8028.63ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:19,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 0 Invalid, 1974 Unknown, 0 Unchecked, 18.92ms Time], IncrementalHoareTripleChecker [16 Valid, 1957 Invalid, 1 Unknown, 0 Unchecked, 8028.63ms Time] [2021-11-03 22:41:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-11-03 22:41:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 388. [2021-11-03 22:41:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 379 states have (on average 1.1134564643799472) internal successors, (422), 387 states have internal predecessors, (422), 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) [2021-11-03 22:41:19,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 422 transitions. [2021-11-03 22:41:19,473 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 422 transitions. Word has length 95 [2021-11-03 22:41:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:19,473 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 422 transitions. [2021-11-03 22:41:19,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2021-11-03 22:41:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 422 transitions. [2021-11-03 22:41:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 22:41:19,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:19,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:19,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-03 22:41:19,474 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:41:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -642167461, now seen corresponding path program 1 times [2021-11-03 22:41:19,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:19,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473185401] [2021-11-03 22:41:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:19,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:22,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:22,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473185401] [2021-11-03 22:41:22,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473185401] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 22:41:22,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:41:22,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 22:41:22,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723158161] [2021-11-03 22:41:22,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 22:41:22,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:41:22,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:41:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:41:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:41:22,414 INFO L87 Difference]: Start difference. First operand 388 states and 422 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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) [2021-11-03 22:41:25,094 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.68s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:41:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:41:29,177 INFO L93 Difference]: Finished difference Result 412 states and 443 transitions. [2021-11-03 22:41:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:41:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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 97 [2021-11-03 22:41:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:41:29,179 INFO L225 Difference]: With dead ends: 412 [2021-11-03 22:41:29,179 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 22:41:29,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1065.96ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-03 22:41:29,179 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 548 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5683.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.14ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6202.71ms IncrementalHoareTripleChecker+Time [2021-11-03 22:41:29,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 9.14ms Time], IncrementalHoareTripleChecker [15 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 6202.71ms Time] [2021-11-03 22:41:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 22:41:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 388. [2021-11-03 22:41:29,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 379 states have (on average 1.108179419525066) internal successors, (420), 387 states have internal predecessors, (420), 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) [2021-11-03 22:41:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 420 transitions. [2021-11-03 22:41:29,193 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 420 transitions. Word has length 97 [2021-11-03 22:41:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:41:29,194 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 420 transitions. [2021-11-03 22:41:29,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 12 states have internal predecessors, (97), 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) [2021-11-03 22:41:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 420 transitions. [2021-11-03 22:41:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-03 22:41:29,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:41:29,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:41:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-03 22:41:29,194 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:41:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:41:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -965477682, now seen corresponding path program 1 times [2021-11-03 22:41:29,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 22:41:29,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328543044] [2021-11-03 22:41:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:29,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 22:41:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:29,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 22:41:29,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328543044] [2021-11-03 22:41:29,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328543044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 22:41:29,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171736750] [2021-11-03 22:41:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:41:29,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 22:41:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:41:29,688 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) [2021-11-03 22:41:29,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 22:41:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:41:30,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-03 22:41:30,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:41:30,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 22:41:30,755 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 22:41:30,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2021-11-03 22:41:30,837 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 [2021-11-03 22:41:31,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:41:31,857 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 26 treesize of output 14 [2021-11-03 22:41:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:41:31,887 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 22 treesize of output 21 [2021-11-03 22:41:32,486 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 24 treesize of output 12 [2021-11-03 22:41:32,513 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 20 treesize of output 19 [2021-11-03 22:41:33,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 22:41:33,282 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-03 22:41:33,759 INFO L354 Elim1Store]: treesize reduction 282, result has 22.3 percent of original size [2021-11-03 22:41:33,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 74 treesize of output 131 [2021-11-03 22:41:35,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 22:41:35,701 INFO L354 Elim1Store]: treesize reduction 63, result has 18.2 percent of original size [2021-11-03 22:41:35,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 68 [2021-11-03 22:41:38,622 INFO L354 Elim1Store]: treesize reduction 78, result has 15.2 percent of original size [2021-11-03 22:41:38,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 99 [2021-11-03 22:41:41,557 INFO L354 Elim1Store]: treesize reduction 356, result has 22.4 percent of original size [2021-11-03 22:41:41,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 93 treesize of output 152 [2021-11-03 22:41:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:41:47,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:42:16,708 WARN L210 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 51 [2021-11-03 22:42:49,384 WARN L210 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-03 22:43:04,925 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| Int) (|ULTIMATE.start_aws_hton32_#res| Int)) (or (and (forall ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_12 Int) (v_prenex_14 Int) (v_prenex_13 Int)) (or (< v_prenex_13 0) (not (= (select (let ((.cse0 (select (let ((.cse4 (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|))) (let ((.cse1 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| .cse4)) (.cse2 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 v_prenex_16)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)))) (store .cse1 .cse2 (let ((.cse3 (mod v_prenex_13 18446744073709551616))) (store (select .cse1 .cse2) (+ v_prenex_12 .cse3) (select .cse4 (+ v_prenex_14 .cse3))))))) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|))) (store .cse0 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset| (+ (select .cse0 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|) v_prenex_15))) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0)) (< 9223372036854775807 v_prenex_13))) (forall ((ULTIMATE.start_memcpy_impl_~dst.offset Int) (aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 Int) (ULTIMATE.start_memcpy_impl_~src.offset Int) (v_DerPreprocessor_1 Int) (ULTIMATE.start_aws_byte_buf_write_~len Int)) (or (<= 18446744073709551616 aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58) (not (= (select (let ((.cse5 (select (let ((.cse9 (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|))) (let ((.cse6 (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| .cse9)) (.cse7 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 v_DerPreprocessor_1)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)))) (store .cse6 .cse7 (let ((.cse8 (mod aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 18446744073709551616))) (store (select .cse6 .cse7) (+ (- 18446744073709551616) .cse8 ULTIMATE.start_memcpy_impl_~dst.offset) (select .cse9 (+ (- 18446744073709551616) .cse8 ULTIMATE.start_memcpy_impl_~src.offset))))))) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|))) (store .cse5 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset| (+ (select .cse5 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|) ULTIMATE.start_aws_byte_buf_write_~len))) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0)) (<= aux_mod_ULTIMATE.start_memcpy_impl_~i~6_58 9223372036854775807)))) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7| (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be32_~#x.base_7|) 0 |ULTIMATE.start_aws_hton32_#res|)) |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_harness_~#buf~3.offset|)) 0))) is different from false [2021-11-03 22:43:16,146 INFO L354 Elim1Store]: treesize reduction 60, result has 56.8 percent of original size [2021-11-03 22:43:16,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 1494 treesize of output 1334 [2021-11-03 22:43:16,954 INFO L354 Elim1Store]: treesize reduction 502, result has 44.7 percent of original size [2021-11-03 22:43:16,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 1334 treesize of output 1136 [2021-11-03 22:43:17,251 INFO L354 Elim1Store]: treesize reduction 82, result has 57.5 percent of original size [2021-11-03 22:43:17,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1136 treesize of output 1192 [2021-11-03 22:43:17,625 INFO L354 Elim1Store]: treesize reduction 60, result has 68.9 percent of original size [2021-11-03 22:43:17,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1192 treesize of output 1278 [2021-11-03 22:43:17,825 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-03 22:43:17,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1278 treesize of output 1288 [2021-11-03 22:43:17,906 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-03 22:43:17,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-03 22:43:17,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-03 22:43:17,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625381540] [2021-11-03 22:43:17,906 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-03 22:43:17,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:43:17,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 22:43:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:43:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=745, Unknown=21, NotChecked=56, Total=930 [2021-11-03 22:43:17,907 INFO L87 Difference]: Start difference. First operand 388 states and 420 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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) [2021-11-03 22:43:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:43:17,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 74030.31ms TimeCoverageRelationStatistics Valid=108, Invalid=745, Unknown=21, NotChecked=56, Total=930 [2021-11-03 22:43:17,909 INFO L933 BasicCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:17,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-03 22:43:17,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 22:43:18,119 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,SelfDestructingSolverStorable46 [2021-11-03 22:43:18,120 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@59f6eb8f at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 22:43:18,122 INFO L158 Benchmark]: Toolchain (without parser) took 606784.28ms. Allocated memory was 107.0MB in the beginning and 790.6MB in the end (delta: 683.7MB). Free memory was 64.4MB in the beginning and 244.2MB in the end (delta: -179.9MB). Peak memory consumption was 503.8MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1702.64ms. Allocated memory was 107.0MB in the beginning and 180.4MB in the end (delta: 73.4MB). Free memory was 64.2MB in the beginning and 119.7MB in the end (delta: -55.6MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 162.55ms. Allocated memory is still 180.4MB. Free memory was 119.7MB in the beginning and 106.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: Boogie Preprocessor took 100.65ms. Allocated memory is still 180.4MB. Free memory was 106.2MB in the beginning and 96.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: RCFGBuilder took 4510.69ms. Allocated memory was 180.4MB in the beginning and 459.3MB in the end (delta: 278.9MB). Free memory was 96.7MB in the beginning and 352.8MB in the end (delta: -256.2MB). Peak memory consumption was 255.4MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,122 INFO L158 Benchmark]: TraceAbstraction took 600300.74ms. Allocated memory was 459.3MB in the beginning and 790.6MB in the end (delta: 331.4MB). Free memory was 352.8MB in the beginning and 244.2MB in the end (delta: 108.6MB). Peak memory consumption was 438.9MB. Max. memory is 16.1GB. [2021-11-03 22:43:18,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 33.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1702.64ms. Allocated memory was 107.0MB in the beginning and 180.4MB in the end (delta: 73.4MB). Free memory was 64.2MB in the beginning and 119.7MB in the end (delta: -55.6MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 162.55ms. Allocated memory is still 180.4MB. Free memory was 119.7MB in the beginning and 106.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.65ms. Allocated memory is still 180.4MB. Free memory was 106.2MB in the beginning and 96.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 4510.69ms. Allocated memory was 180.4MB in the beginning and 459.3MB in the end (delta: 278.9MB). Free memory was 96.7MB in the beginning and 352.8MB in the end (delta: -256.2MB). Peak memory consumption was 255.4MB. Max. memory is 16.1GB. * TraceAbstraction took 600300.74ms. Allocated memory was 459.3MB in the beginning and 790.6MB in the end (delta: 331.4MB). Free memory was 352.8MB in the beginning and 244.2MB in the end (delta: 108.6MB). Peak memory consumption was 438.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@59f6eb8f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@59f6eb8f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:81) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-03 22:43:18,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 22:43:19,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 22:43:19,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 22:43:19,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 22:43:19,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 22:43:19,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 22:43:19,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 22:43:19,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 22:43:19,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 22:43:19,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 22:43:19,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 22:43:19,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 22:43:19,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 22:43:19,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 22:43:19,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 22:43:19,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 22:43:19,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 22:43:19,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 22:43:19,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 22:43:19,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 22:43:19,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 22:43:19,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 22:43:19,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 22:43:19,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 22:43:19,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 22:43:19,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 22:43:19,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 22:43:19,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 22:43:19,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 22:43:19,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 22:43:19,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 22:43:19,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 22:43:19,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 22:43:19,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 22:43:19,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 22:43:19,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 22:43:19,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 22:43:19,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 22:43:19,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 22:43:19,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 22:43:19,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 22:43:19,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-03 22:43:19,906 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 22:43:19,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 22:43:19,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 22:43:19,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 22:43:19,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 22:43:19,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 22:43:19,910 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 22:43:19,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 22:43:19,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 22:43:19,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 22:43:19,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 22:43:19,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 22:43:19,911 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 22:43:19,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 22:43:19,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 22:43:19,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 22:43:19,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 22:43:19,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 22:43:19,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 22:43:19,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 22:43:19,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:43:19,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 22:43:19,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 22:43:19,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 22:43:19,913 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 22:43:19,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 22:43:19,915 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2021-11-03 22:43:20,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 22:43:20,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 22:43:20,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 22:43:20,178 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 22:43:20,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 22:43:20,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-03 22:43:20,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2215b2ca/21869027d0074a9a8a72cd7de38decd7/FLAG1520a07c2 [2021-11-03 22:43:20,730 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 22:43:20,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2021-11-03 22:43:20,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2215b2ca/21869027d0074a9a8a72cd7de38decd7/FLAG1520a07c2 [2021-11-03 22:43:20,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2215b2ca/21869027d0074a9a8a72cd7de38decd7 [2021-11-03 22:43:20,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 22:43:20,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 22:43:20,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 22:43:20,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 22:43:20,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 22:43:20,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:43:20" (1/1) ... [2021-11-03 22:43:20,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4b2f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:20, skipping insertion in model container [2021-11-03 22:43:20,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 10:43:20" (1/1) ... [2021-11-03 22:43:20,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 22:43:21,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 22:43:21,255 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_byte_buf_write_be32_harness.i[4497,4510] [2021-11-03 22:43:21,260 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_byte_buf_write_be32_harness.i[4557,4570] [2021-11-03 22:43:21,278 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:43:21,287 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:43:21,805 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:21,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:43:22,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:43:22,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:43:22,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:43:22,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:43:22,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:43:22,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:43:22,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:43:22,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:43:22,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:43:22,132 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:43:22,204 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:43:22,345 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 22:43:22,363 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_byte_buf_write_be32_harness.i[4497,4510] [2021-11-03 22:43:22,364 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_byte_buf_write_be32_harness.i[4557,4570] [2021-11-03 22:43:22,366 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 22:43:22,367 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 22:43:22,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,398 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,399 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,400 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,418 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,419 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,419 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 22:43:22,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 22:43:22,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 22:43:22,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 22:43:22,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 22:43:22,460 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 22:43:22,461 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 22:43:22,461 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 22:43:22,462 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 22:43:22,465 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 22:43:22,484 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 22:43:22,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 22:43:22,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 22:43:22,786 INFO L208 MainTranslator]: Completed translation [2021-11-03 22:43:22,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22 WrapperNode [2021-11-03 22:43:22,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 22:43:22,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 22:43:22,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 22:43:22,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 22:43:22,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:22,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:22,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 22:43:22,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 22:43:22,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 22:43:22,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 22:43:22,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:22,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 22:43:23,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 22:43:23,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 22:43:23,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 22:43:23,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (1/1) ... [2021-11-03 22:43:23,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 22:43:23,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 22:43:23,115 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) [2021-11-03 22:43:23,123 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 [2021-11-03 22:43:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 22:43:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 22:43:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 22:43:23,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 22:43:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 22:43:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 22:43:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 22:43:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 22:43:29,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 22:43:29,548 INFO L299 CfgBuilder]: Removed 89 assume(true) statements. [2021-11-03 22:43:29,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:43:29 BoogieIcfgContainer [2021-11-03 22:43:29,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 22:43:29,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 22:43:29,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 22:43:29,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 22:43:29,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 10:43:20" (1/3) ... [2021-11-03 22:43:29,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76901bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:43:29, skipping insertion in model container [2021-11-03 22:43:29,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 10:43:22" (2/3) ... [2021-11-03 22:43:29,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76901bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 10:43:29, skipping insertion in model container [2021-11-03 22:43:29,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 10:43:29" (3/3) ... [2021-11-03 22:43:29,557 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2021-11-03 22:43:29,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 22:43:29,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-03 22:43:29,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 22:43:29,606 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 [2021-11-03 22:43:29,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-03 22:43:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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) [2021-11-03 22:43:29,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:43:29,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:29,631 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] [2021-11-03 22:43:29,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:43:29,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 733514216, now seen corresponding path program 1 times [2021-11-03 22:43:29,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:43:29,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221608524] [2021-11-03 22:43:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:29,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:43:29,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:43:29,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:43:29,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 22:43:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:31,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 22:43:32,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:43:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:32,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:43:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:32,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:43:32,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221608524] [2021-11-03 22:43:32,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221608524] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:32,214 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:32,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 22:43:32,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130636166] [2021-11-03 22:43:32,216 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:32,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 22:43:32,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:43:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 22:43:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:43:32,246 INFO L87 Difference]: Start difference. First operand has 186 states, 174 states have (on average 1.4827586206896552) internal successors, (258), 185 states have internal predecessors, (258), 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 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2021-11-03 22:43:34,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:35,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:35,442 INFO L93 Difference]: Finished difference Result 368 states and 511 transitions. [2021-11-03 22:43:35,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 22:43:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-11-03 22:43:35,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:35,452 INFO L225 Difference]: With dead ends: 368 [2021-11-03 22:43:35,452 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:43:35,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.21ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 22:43:35,456 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2972.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3135.72ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:35,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 236 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 1 Unknown, 0 Unchecked, 3135.72ms Time] [2021-11-03 22:43:35,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:43:35,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:43:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 180 states have internal predecessors, (231), 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) [2021-11-03 22:43:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-03 22:43:35,491 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 39 [2021-11-03 22:43:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:35,495 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-03 22:43:35,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 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) [2021-11-03 22:43:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-03 22:43:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 22:43:35,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:35,497 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] [2021-11-03 22:43:35,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 22:43:35,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:43:35,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:43:35,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:35,710 INFO L85 PathProgramCache]: Analyzing trace with hash 699508844, now seen corresponding path program 1 times [2021-11-03 22:43:35,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:43:35,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773581555] [2021-11-03 22:43:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:35,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:43:35,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:43:35,715 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:43:35,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 22:43:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:37,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 22:43:37,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:43:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:38,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:43:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:38,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:43:38,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773581555] [2021-11-03 22:43:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773581555] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:38,432 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:38,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 22:43:38,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473944959] [2021-11-03 22:43:38,432 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:43:38,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:43:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:43:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:43:38,434 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-03 22:43:40,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:42,040 INFO L93 Difference]: Finished difference Result 336 states and 428 transitions. [2021-11-03 22:43:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 22:43:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2021-11-03 22:43:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:42,046 INFO L225 Difference]: With dead ends: 336 [2021-11-03 22:43:42,046 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 22:43:42,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:43:42,048 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3322.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.22ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3532.74ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:42,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 351 Unknown, 0 Unchecked, 10.22ms Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 1 Unknown, 0 Unchecked, 3532.74ms Time] [2021-11-03 22:43:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 22:43:42,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-03 22:43:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 180 states have internal predecessors, (228), 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) [2021-11-03 22:43:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 228 transitions. [2021-11-03 22:43:42,056 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 228 transitions. Word has length 39 [2021-11-03 22:43:42,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:42,056 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 228 transitions. [2021-11-03 22:43:42,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2021-11-03 22:43:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 228 transitions. [2021-11-03 22:43:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:43:42,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:42,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:42,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 22:43:42,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:43:42,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:43:42,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1277536330, now seen corresponding path program 1 times [2021-11-03 22:43:42,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:43:42,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992289544] [2021-11-03 22:43:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:42,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:43:42,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:43:42,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:43:42,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 22:43:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:44,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1683 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 22:43:44,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:43:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:44,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:43:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:44,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:43:44,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992289544] [2021-11-03 22:43:44,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992289544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:44,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:44,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 22:43:44,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67380402] [2021-11-03 22:43:44,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:44,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:43:44,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:43:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:43:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:43:44,895 INFO L87 Difference]: Start difference. First operand 181 states and 228 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:47,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:49,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:49,044 INFO L93 Difference]: Finished difference Result 397 states and 508 transitions. [2021-11-03 22:43:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:43:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 22:43:49,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:49,046 INFO L225 Difference]: With dead ends: 397 [2021-11-03 22:43:49,046 INFO L226 Difference]: Without dead ends: 241 [2021-11-03 22:43:49,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:43:49,049 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3872.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.41ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4083.30ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:49,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 8.41ms Time], IncrementalHoareTripleChecker [21 Valid, 699 Invalid, 1 Unknown, 0 Unchecked, 4083.30ms Time] [2021-11-03 22:43:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-03 22:43:49,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 193. [2021-11-03 22:43:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 182 states have (on average 1.3186813186813187) internal successors, (240), 192 states have internal predecessors, (240), 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) [2021-11-03 22:43:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2021-11-03 22:43:49,059 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 51 [2021-11-03 22:43:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:49,059 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2021-11-03 22:43:49,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 22:43:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2021-11-03 22:43:49,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 22:43:49,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:49,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:43:49,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 22:43:49,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:43:49,273 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:43:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1671903116, now seen corresponding path program 1 times [2021-11-03 22:43:49,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:43:49,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998476887] [2021-11-03 22:43:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:49,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:43:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:43:49,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:43:49,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 22:43:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:43:51,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 22:43:51,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:43:51,849 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 [2021-11-03 22:43:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:52,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:43:52,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2021-11-03 22:43:52,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:43:52,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:43:52,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998476887] [2021-11-03 22:43:52,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998476887] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:43:52,768 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:43:52,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 13 [2021-11-03 22:43:52,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361992364] [2021-11-03 22:43:52,768 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:43:52,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:43:52,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:43:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:43:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:43:52,769 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2021-11-03 22:43:54,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:43:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:43:59,602 INFO L93 Difference]: Finished difference Result 420 states and 528 transitions. [2021-11-03 22:43:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 22:43:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 22:43:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:43:59,604 INFO L225 Difference]: With dead ends: 420 [2021-11-03 22:43:59,604 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 22:43:59,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 833.71ms TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-03 22:43:59,605 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1310 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5926.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.67ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6345.61ms IncrementalHoareTripleChecker+Time [2021-11-03 22:43:59,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 0 Invalid, 1237 Unknown, 0 Unchecked, 25.67ms Time], IncrementalHoareTripleChecker [32 Valid, 1204 Invalid, 1 Unknown, 0 Unchecked, 6345.61ms Time] [2021-11-03 22:43:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 22:43:59,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 196. [2021-11-03 22:43:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 185 states have (on average 1.318918918918919) internal successors, (244), 195 states have internal predecessors, (244), 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) [2021-11-03 22:43:59,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2021-11-03 22:43:59,621 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 51 [2021-11-03 22:43:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:43:59,622 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2021-11-03 22:43:59,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 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) [2021-11-03 22:43:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2021-11-03 22:43:59,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 22:43:59,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:43:59,625 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] [2021-11-03 22:43:59,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 22:43:59,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:43:59,844 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:43:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:43:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 325189425, now seen corresponding path program 1 times [2021-11-03 22:43:59,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:43:59,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975459776] [2021-11-03 22:43:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:43:59,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:43:59,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:43:59,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:43:59,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 22:44:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1704 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 22:44:02,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:44:02,418 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 22:44:02,419 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 59 treesize of output 23 [2021-11-03 22:44:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:02,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:44:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:03,036 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:44:03,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975459776] [2021-11-03 22:44:03,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975459776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:03,037 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:03,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-03 22:44:03,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732726706] [2021-11-03 22:44:03,037 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:03,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:44:03,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:44:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:44:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:44:03,038 INFO L87 Difference]: Start difference. First operand 196 states and 244 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-11-03 22:44:05,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:10,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:10,643 INFO L93 Difference]: Finished difference Result 592 states and 733 transitions. [2021-11-03 22:44:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 22:44:10,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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 58 [2021-11-03 22:44:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:10,646 INFO L225 Difference]: With dead ends: 592 [2021-11-03 22:44:10,646 INFO L226 Difference]: Without dead ends: 416 [2021-11-03 22:44:10,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 388.12ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-03 22:44:10,647 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 666 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6846.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.01ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7365.73ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:10,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 0 Invalid, 1456 Unknown, 0 Unchecked, 18.01ms Time], IncrementalHoareTripleChecker [38 Valid, 1417 Invalid, 1 Unknown, 0 Unchecked, 7365.73ms Time] [2021-11-03 22:44:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-11-03 22:44:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 238. [2021-11-03 22:44:10,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 227 states have (on average 1.3127753303964758) internal successors, (298), 237 states have internal predecessors, (298), 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) [2021-11-03 22:44:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2021-11-03 22:44:10,655 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 58 [2021-11-03 22:44:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2021-11-03 22:44:10,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2021-11-03 22:44:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2021-11-03 22:44:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-03 22:44:10,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:10,656 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] [2021-11-03 22:44:10,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 22:44:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:44:10,865 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:44:10,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:10,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1046617873, now seen corresponding path program 1 times [2021-11-03 22:44:10,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:44:10,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142979747] [2021-11-03 22:44:10,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:10,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:44:10,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:44:10,870 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:44:10,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 22:44:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:13,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 22:44:13,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:44:13,282 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-03 22:44:13,283 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 59 treesize of output 23 [2021-11-03 22:44:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:13,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:44:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:14,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:44:14,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142979747] [2021-11-03 22:44:14,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142979747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:14,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:14,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-11-03 22:44:14,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668109979] [2021-11-03 22:44:14,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:14,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 22:44:14,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:44:14,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 22:44:14,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 22:44:14,173 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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) [2021-11-03 22:44:16,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:32,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:32,661 INFO L93 Difference]: Finished difference Result 735 states and 873 transitions. [2021-11-03 22:44:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-03 22:44:32,661 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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 58 [2021-11-03 22:44:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:32,663 INFO L225 Difference]: With dead ends: 735 [2021-11-03 22:44:32,663 INFO L226 Difference]: Without dead ends: 459 [2021-11-03 22:44:32,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1756.79ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-11-03 22:44:32,664 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 450 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15885.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.71ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17090.06ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:32,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 0 Invalid, 3955 Unknown, 0 Unchecked, 33.71ms Time], IncrementalHoareTripleChecker [139 Valid, 3815 Invalid, 1 Unknown, 0 Unchecked, 17090.06ms Time] [2021-11-03 22:44:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-03 22:44:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 231. [2021-11-03 22:44:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 220 states have (on average 1.2545454545454546) internal successors, (276), 230 states have internal predecessors, (276), 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) [2021-11-03 22:44:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 276 transitions. [2021-11-03 22:44:32,670 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 276 transitions. Word has length 58 [2021-11-03 22:44:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:32,670 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 276 transitions. [2021-11-03 22:44:32,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 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) [2021-11-03 22:44:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 276 transitions. [2021-11-03 22:44:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 22:44:32,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:32,672 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] [2021-11-03 22:44:32,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 22:44:32,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:44:32,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:44:32,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1728662275, now seen corresponding path program 1 times [2021-11-03 22:44:32,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:44:32,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019503339] [2021-11-03 22:44:32,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:32,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:44:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:44:32,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:44:32,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 22:44:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:35,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1719 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-03 22:44:35,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:44:35,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 22:44:35,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2021-11-03 22:44:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:35,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:44:36,386 INFO L354 Elim1Store]: treesize reduction 39, result has 46.6 percent of original size [2021-11-03 22:44:36,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 46 [2021-11-03 22:44:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:37,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:44:37,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019503339] [2021-11-03 22:44:37,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019503339] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:37,160 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-03 22:44:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051333498] [2021-11-03 22:44:37,161 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:37,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:44:37,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:44:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:44:37,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:44:37,162 INFO L87 Difference]: Start difference. First operand 231 states and 276 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2021-11-03 22:44:39,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:42,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:48,230 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:44:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:44:48,377 INFO L93 Difference]: Finished difference Result 631 states and 753 transitions. [2021-11-03 22:44:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 22:44:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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 66 [2021-11-03 22:44:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:44:48,379 INFO L225 Difference]: With dead ends: 631 [2021-11-03 22:44:48,379 INFO L226 Difference]: Without dead ends: 436 [2021-11-03 22:44:48,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 692.24ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-03 22:44:48,380 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 365 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 20 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10322.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.00ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 10813.67ms IncrementalHoareTripleChecker+Time [2021-11-03 22:44:48,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 0 Invalid, 1236 Unknown, 0 Unchecked, 14.00ms Time], IncrementalHoareTripleChecker [20 Valid, 1212 Invalid, 3 Unknown, 1 Unchecked, 10813.67ms Time] [2021-11-03 22:44:48,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-11-03 22:44:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 239. [2021-11-03 22:44:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 228 states have (on average 1.2456140350877194) internal successors, (284), 238 states have internal predecessors, (284), 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) [2021-11-03 22:44:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 284 transitions. [2021-11-03 22:44:48,386 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 284 transitions. Word has length 66 [2021-11-03 22:44:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:44:48,387 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 284 transitions. [2021-11-03 22:44:48,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 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) [2021-11-03 22:44:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 284 transitions. [2021-11-03 22:44:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 22:44:48,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:44:48,396 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] [2021-11-03 22:44:48,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 22:44:48,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:44:48,603 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:44:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:44:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1672818683, now seen corresponding path program 1 times [2021-11-03 22:44:48,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:44:48,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035081341] [2021-11-03 22:44:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:44:48,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:44:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:44:48,609 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:44:48,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 22:44:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:44:51,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 22:44:51,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:44:51,802 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-03 22:44:51,803 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 53 treesize of output 23 [2021-11-03 22:44:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:51,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:44:52,781 INFO L354 Elim1Store]: treesize reduction 24, result has 67.1 percent of original size [2021-11-03 22:44:52,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 66 [2021-11-03 22:44:54,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:44:54,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:44:54,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035081341] [2021-11-03 22:44:54,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035081341] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:44:54,667 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:44:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-03 22:44:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127735396] [2021-11-03 22:44:54,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:44:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-03 22:44:54,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:44:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-03 22:44:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:44:54,668 INFO L87 Difference]: Start difference. First operand 239 states and 284 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2021-11-03 22:44:56,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:04,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:08,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:11,110 INFO L93 Difference]: Finished difference Result 731 states and 862 transitions. [2021-11-03 22:45:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 22:45:11,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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 66 [2021-11-03 22:45:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:11,113 INFO L225 Difference]: With dead ends: 731 [2021-11-03 22:45:11,113 INFO L226 Difference]: Without dead ends: 590 [2021-11-03 22:45:11,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2499.17ms TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-03 22:45:11,114 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1535 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 91 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13630.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.67ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14526.31ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:11,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1535 Valid, 0 Invalid, 1883 Unknown, 0 Unchecked, 25.67ms Time], IncrementalHoareTripleChecker [91 Valid, 1789 Invalid, 3 Unknown, 0 Unchecked, 14526.31ms Time] [2021-11-03 22:45:11,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-03 22:45:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 266. [2021-11-03 22:45:11,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 255 states have (on average 1.2352941176470589) internal successors, (315), 265 states have internal predecessors, (315), 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) [2021-11-03 22:45:11,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 315 transitions. [2021-11-03 22:45:11,121 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 315 transitions. Word has length 66 [2021-11-03 22:45:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:11,122 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 315 transitions. [2021-11-03 22:45:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2021-11-03 22:45:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 315 transitions. [2021-11-03 22:45:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 22:45:11,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:11,123 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] [2021-11-03 22:45:11,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 22:45:11,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:45:11,327 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:45:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:11,328 INFO L85 PathProgramCache]: Analyzing trace with hash 102188679, now seen corresponding path program 1 times [2021-11-03 22:45:11,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:45:11,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5864189] [2021-11-03 22:45:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:11,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:45:11,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:45:11,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:45:11,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 22:45:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:13,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 22:45:13,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:45:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:14,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:45:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:14,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:45:14,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5864189] [2021-11-03 22:45:14,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5864189] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:14,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:14,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-03 22:45:14,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854541252] [2021-11-03 22:45:14,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:14,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 22:45:14,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:45:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 22:45:14,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 22:45:14,635 INFO L87 Difference]: Start difference. First operand 266 states and 315 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-11-03 22:45:16,835 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:18,809 INFO L93 Difference]: Finished difference Result 347 states and 407 transitions. [2021-11-03 22:45:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:45:18,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 66 [2021-11-03 22:45:18,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:18,811 INFO L225 Difference]: With dead ends: 347 [2021-11-03 22:45:18,811 INFO L226 Difference]: Without dead ends: 266 [2021-11-03 22:45:18,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 255.60ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:45:18,812 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 593 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3729.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3958.70ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:18,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 0 Invalid, 429 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [6 Valid, 422 Invalid, 1 Unknown, 0 Unchecked, 3958.70ms Time] [2021-11-03 22:45:18,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-03 22:45:18,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-03 22:45:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 255 states have (on average 1.223529411764706) internal successors, (312), 265 states have internal predecessors, (312), 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) [2021-11-03 22:45:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 312 transitions. [2021-11-03 22:45:18,819 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 312 transitions. Word has length 66 [2021-11-03 22:45:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 312 transitions. [2021-11-03 22:45:18,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-11-03 22:45:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 312 transitions. [2021-11-03 22:45:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-03 22:45:18,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:18,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:18,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 22:45:19,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:45:19,034 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:45:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1539054020, now seen corresponding path program 1 times [2021-11-03 22:45:19,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:45:19,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108580317] [2021-11-03 22:45:19,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:19,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:45:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:45:19,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:45:19,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 22:45:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:21,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-03 22:45:21,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:45:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:23,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:45:26,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 22:45:26,480 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 40 treesize of output 43 [2021-11-03 22:45:26,533 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-03 22:45:26,534 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 39 treesize of output 34 [2021-11-03 22:45:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:26,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:45:26,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108580317] [2021-11-03 22:45:26,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108580317] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:26,802 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:26,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 12] imperfect sequences [] total 21 [2021-11-03 22:45:26,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628377506] [2021-11-03 22:45:26,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:26,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-03 22:45:26,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:45:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-03 22:45:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:45:26,803 INFO L87 Difference]: Start difference. First operand 266 states and 312 transitions. Second operand has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 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) [2021-11-03 22:45:29,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:45:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:45:48,596 INFO L93 Difference]: Finished difference Result 671 states and 789 transitions. [2021-11-03 22:45:48,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-03 22:45:48,597 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 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 72 [2021-11-03 22:45:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:45:48,599 INFO L225 Difference]: With dead ends: 671 [2021-11-03 22:45:48,599 INFO L226 Difference]: Without dead ends: 559 [2021-11-03 22:45:48,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 9137.99ms TimeCoverageRelationStatistics Valid=887, Invalid=3943, Unknown=0, NotChecked=0, Total=4830 [2021-11-03 22:45:48,602 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2546 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 328 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13105.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.34ms SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14170.17ms IncrementalHoareTripleChecker+Time [2021-11-03 22:45:48,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2546 Valid, 0 Invalid, 3301 Unknown, 0 Unchecked, 37.34ms Time], IncrementalHoareTripleChecker [328 Valid, 2972 Invalid, 1 Unknown, 0 Unchecked, 14170.17ms Time] [2021-11-03 22:45:48,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-03 22:45:48,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 305. [2021-11-03 22:45:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 294 states have (on average 1.2142857142857142) internal successors, (357), 304 states have internal predecessors, (357), 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) [2021-11-03 22:45:48,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 357 transitions. [2021-11-03 22:45:48,612 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 357 transitions. Word has length 72 [2021-11-03 22:45:48,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:45:48,612 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 357 transitions. [2021-11-03 22:45:48,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 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) [2021-11-03 22:45:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 357 transitions. [2021-11-03 22:45:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:45:48,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:45:48,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:45:48,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 22:45:48,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:45:48,822 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:45:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:45:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1546105136, now seen corresponding path program 1 times [2021-11-03 22:45:48,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:45:48,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053218440] [2021-11-03 22:45:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:45:48,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:45:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:45:48,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:45:48,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 22:45:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:45:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 22:45:51,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:45:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:52,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:45:53,502 INFO L354 Elim1Store]: treesize reduction 51, result has 40.0 percent of original size [2021-11-03 22:45:53,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 45 [2021-11-03 22:45:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:45:54,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:45:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053218440] [2021-11-03 22:45:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053218440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:45:54,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:45:54,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 7] imperfect sequences [] total 13 [2021-11-03 22:45:54,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342069364] [2021-11-03 22:45:54,429 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:45:54,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 22:45:54,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:45:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 22:45:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-03 22:45:54,430 INFO L87 Difference]: Start difference. First operand 305 states and 357 transitions. Second operand has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 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) [2021-11-03 22:45:56,655 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:04,142 INFO L93 Difference]: Finished difference Result 536 states and 616 transitions. [2021-11-03 22:46:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 22:46:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 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 76 [2021-11-03 22:46:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:04,144 INFO L225 Difference]: With dead ends: 536 [2021-11-03 22:46:04,144 INFO L226 Difference]: Without dead ends: 421 [2021-11-03 22:46:04,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1669.98ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-11-03 22:46:04,145 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1349 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 71 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8050.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.33ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8745.67ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:04,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 0 Invalid, 1630 Unknown, 0 Unchecked, 18.33ms Time], IncrementalHoareTripleChecker [71 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 8745.67ms Time] [2021-11-03 22:46:04,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-03 22:46:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 317. [2021-11-03 22:46:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 306 states have (on average 1.2058823529411764) internal successors, (369), 316 states have internal predecessors, (369), 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) [2021-11-03 22:46:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 369 transitions. [2021-11-03 22:46:04,154 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 369 transitions. Word has length 76 [2021-11-03 22:46:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:04,154 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 369 transitions. [2021-11-03 22:46:04,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.538461538461538) internal successors, (137), 13 states have internal predecessors, (137), 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) [2021-11-03 22:46:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 369 transitions. [2021-11-03 22:46:04,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 22:46:04,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:04,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:04,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 22:46:04,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:46:04,367 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:46:04,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 328516854, now seen corresponding path program 1 times [2021-11-03 22:46:04,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:46:04,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477704873] [2021-11-03 22:46:04,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:04,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:46:04,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:46:04,376 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:46:04,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 22:46:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:06,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 22:46:06,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:46:06,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:06,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:46:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:06,966 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:46:06,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477704873] [2021-11-03 22:46:06,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477704873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:06,966 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:06,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 22:46:06,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716754091] [2021-11-03 22:46:06,967 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:06,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 22:46:06,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:46:06,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 22:46:06,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 22:46:06,968 INFO L87 Difference]: Start difference. First operand 317 states and 369 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-03 22:46:09,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:11,031 INFO L93 Difference]: Finished difference Result 603 states and 693 transitions. [2021-11-03 22:46:11,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:46:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-11-03 22:46:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:11,032 INFO L225 Difference]: With dead ends: 603 [2021-11-03 22:46:11,032 INFO L226 Difference]: Without dead ends: 303 [2021-11-03 22:46:11,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:46:11,033 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3810.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.20ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4013.62ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:11,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 639 Unknown, 0 Unchecked, 3.20ms Time], IncrementalHoareTripleChecker [18 Valid, 620 Invalid, 1 Unknown, 0 Unchecked, 4013.62ms Time] [2021-11-03 22:46:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-03 22:46:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 264. [2021-11-03 22:46:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 253 states have (on average 1.173913043478261) internal successors, (297), 263 states have internal predecessors, (297), 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) [2021-11-03 22:46:11,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2021-11-03 22:46:11,040 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 76 [2021-11-03 22:46:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:11,040 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2021-11-03 22:46:11,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-11-03 22:46:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2021-11-03 22:46:11,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 22:46:11,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:11,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:11,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 22:46:11,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:46:11,267 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:46:11,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1639686267, now seen corresponding path program 1 times [2021-11-03 22:46:11,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:46:11,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1810131702] [2021-11-03 22:46:11,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:11,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:46:11,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:46:11,273 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:46:11,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 22:46:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:13,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 22:46:13,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:46:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:13,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:46:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:14,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:46:14,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1810131702] [2021-11-03 22:46:14,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1810131702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:14,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:14,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 22:46:14,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500852112] [2021-11-03 22:46:14,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:14,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 22:46:14,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:46:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 22:46:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 22:46:14,086 INFO L87 Difference]: Start difference. First operand 264 states and 297 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-03 22:46:16,279 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:19,246 INFO L93 Difference]: Finished difference Result 355 states and 400 transitions. [2021-11-03 22:46:19,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 22:46:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2021-11-03 22:46:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:19,247 INFO L225 Difference]: With dead ends: 355 [2021-11-03 22:46:19,247 INFO L226 Difference]: Without dead ends: 317 [2021-11-03 22:46:19,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.79ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:19,248 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4792.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5071.64ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:19,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [2 Valid, 855 Invalid, 1 Unknown, 0 Unchecked, 5071.64ms Time] [2021-11-03 22:46:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-11-03 22:46:19,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 267. [2021-11-03 22:46:19,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 256 states have (on average 1.171875) internal successors, (300), 266 states have internal predecessors, (300), 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) [2021-11-03 22:46:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2021-11-03 22:46:19,255 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 77 [2021-11-03 22:46:19,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2021-11-03 22:46:19,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2021-11-03 22:46:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2021-11-03 22:46:19,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 22:46:19,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:19,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:19,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 22:46:19,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:46:19,474 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:46:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -708438075, now seen corresponding path program 1 times [2021-11-03 22:46:19,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:46:19,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240167961] [2021-11-03 22:46:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:19,478 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:46:19,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:46:19,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:46:19,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 22:46:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 22:46:22,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 22:46:22,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 22:46:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:23,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 22:46:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 22:46:24,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-03 22:46:24,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240167961] [2021-11-03 22:46:24,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240167961] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 22:46:24,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 22:46:24,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-03 22:46:24,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495738684] [2021-11-03 22:46:24,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-03 22:46:24,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 22:46:24,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-03 22:46:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 22:46:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-03 22:46:24,122 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2021-11-03 22:46:26,340 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 22:46:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 22:46:29,807 INFO L93 Difference]: Finished difference Result 293 states and 330 transitions. [2021-11-03 22:46:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 22:46:29,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 78 [2021-11-03 22:46:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 22:46:29,808 INFO L225 Difference]: With dead ends: 293 [2021-11-03 22:46:29,808 INFO L226 Difference]: Without dead ends: 291 [2021-11-03 22:46:29,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 320.03ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-03 22:46:29,809 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 299 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5105.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.48ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5447.67ms IncrementalHoareTripleChecker+Time [2021-11-03 22:46:29,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 0 Invalid, 827 Unknown, 0 Unchecked, 6.48ms Time], IncrementalHoareTripleChecker [20 Valid, 806 Invalid, 1 Unknown, 0 Unchecked, 5447.67ms Time] [2021-11-03 22:46:29,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-03 22:46:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 265. [2021-11-03 22:46:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 255 states have (on average 1.1686274509803922) internal successors, (298), 264 states have internal predecessors, (298), 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) [2021-11-03 22:46:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 298 transitions. [2021-11-03 22:46:29,817 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 298 transitions. Word has length 78 [2021-11-03 22:46:29,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 22:46:29,817 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 298 transitions. [2021-11-03 22:46:29,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2021-11-03 22:46:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 298 transitions. [2021-11-03 22:46:29,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 22:46:29,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 22:46:29,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 22:46:29,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 22:46:30,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-03 22:46:30,036 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-03 22:46:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 22:46:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2090948519, now seen corresponding path program 1 times [2021-11-03 22:46:30,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-03 22:46:30,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679872112] [2021-11-03 22:46:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 22:46:30,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 22:46:30,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-03 22:46:30,041 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 22:46:30,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process Killed by 15