./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 12:52:25,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 12:52:25,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 12:52:25,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 12:52:25,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 12:52:25,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 12:52:25,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 12:52:25,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 12:52:25,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 12:52:25,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 12:52:25,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 12:52:25,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 12:52:25,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 12:52:25,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 12:52:25,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 12:52:25,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 12:52:25,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 12:52:25,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 12:52:25,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 12:52:25,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 12:52:25,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 12:52:25,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 12:52:25,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 12:52:25,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 12:52:25,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 12:52:25,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 12:52:25,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 12:52:25,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 12:52:25,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 12:52:25,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 12:52:25,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 12:52:25,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 12:52:25,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 12:52:25,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 12:52:25,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 12:52:25,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 12:52:25,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 12:52:25,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 12:52:25,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 12:52:25,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 12:52:25,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 12:52:25,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 12:52:25,605 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 12:52:25,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 12:52:25,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 12:52:25,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 12:52:25,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 12:52:25,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 12:52:25,608 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 12:52:25,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 12:52:25,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 12:52:25,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 12:52:25,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 12:52:25,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 12:52:25,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 12:52:25,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 12:52:25,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:52:25,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 12:52:25,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 12:52:25,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 12:52:25,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 12:52:25,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-02 12:52:25,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 12:52:25,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 12:52:25,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 12:52:25,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 12:52:25,794 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 12:52:25,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-02 12:52:25,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c366e86/410d76a6cf084c4fba3b4dfde8df9aec/FLAGa3e665a34 [2021-11-02 12:52:26,446 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 12:52:26,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-02 12:52:26,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c366e86/410d76a6cf084c4fba3b4dfde8df9aec/FLAGa3e665a34 [2021-11-02 12:52:26,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63c366e86/410d76a6cf084c4fba3b4dfde8df9aec [2021-11-02 12:52:26,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 12:52:26,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 12:52:26,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 12:52:26,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 12:52:26,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 12:52:26,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:52:26" (1/1) ... [2021-11-02 12:52:26,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b40f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:26, skipping insertion in model container [2021-11-02 12:52:26,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:52:26" (1/1) ... [2021-11-02 12:52:26,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 12:52:26,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 12:52:26,959 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_from_whole_buffer_harness-1.i[4510,4523] [2021-11-02 12:52:26,966 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_from_whole_buffer_harness-1.i[4570,4583] [2021-11-02 12:52:26,979 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:52:26,984 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:52:27,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,484 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,485 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,512 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,701 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:52:27,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:52:27,702 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:52:27,703 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:52:27,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:52:27,704 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:52:27,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:52:27,705 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:52:27,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:52:27,706 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:52:27,794 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:52:27,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:27,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:52:27,993 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 12:52:28,013 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_from_whole_buffer_harness-1.i[4510,4523] [2021-11-02 12:52:28,015 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_from_whole_buffer_harness-1.i[4570,4583] [2021-11-02 12:52:28,017 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 12:52:28,017 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 12:52:28,046 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,047 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,048 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,057 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,092 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 12:52:28,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 12:52:28,093 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 12:52:28,095 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 12:52:28,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 12:52:28,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 12:52:28,096 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 12:52:28,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 12:52:28,097 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 12:52:28,100 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 12:52:28,118 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 12:52:28,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 12:52:28,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 12:52:28,389 INFO L208 MainTranslator]: Completed translation [2021-11-02 12:52:28,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28 WrapperNode [2021-11-02 12:52:28,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 12:52:28,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 12:52:28,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 12:52:28,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 12:52:28,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 12:52:28,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 12:52:28,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 12:52:28,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 12:52:28,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 12:52:28,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 12:52:28,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 12:52:28,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 12:52:28,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (1/1) ... [2021-11-02 12:52:28,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 12:52:28,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 12:52:28,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 12:52:28,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 12:52:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 12:52:28,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 12:52:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 12:52:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 12:52:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 12:52:28,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 12:52:28,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 12:52:28,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 12:52:28,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 12:52:28,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 12:52:28,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 12:52:33,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 12:52:33,474 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-02 12:52:33,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:52:33 BoogieIcfgContainer [2021-11-02 12:52:33,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 12:52:33,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 12:52:33,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 12:52:33,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 12:52:33,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:52:26" (1/3) ... [2021-11-02 12:52:33,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7da8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:52:33, skipping insertion in model container [2021-11-02 12:52:33,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:52:28" (2/3) ... [2021-11-02 12:52:33,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec7da8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:52:33, skipping insertion in model container [2021-11-02 12:52:33,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:52:33" (3/3) ... [2021-11-02 12:52:33,482 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-02 12:52:33,487 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 12:52:33,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 12:52:33,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 12:52:33,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 12:52:33,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 12:52:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 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) [2021-11-02 12:52:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:52:33,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:33,571 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] [2021-11-02 12:52:33,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-02 12:52:33,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:33,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64436691] [2021-11-02 12:52:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:33,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:34,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:34,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64436691] [2021-11-02 12:52:34,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64436691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:34,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:34,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 12:52:34,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951302044] [2021-11-02 12:52:34,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 12:52:34,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 12:52:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:52:34,125 INFO L87 Difference]: Start difference. First operand has 297 states, 277 states have (on average 1.4873646209386282) internal successors, (412), 296 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) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2021-11-02 12:52:36,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:37,443 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-02 12:52:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 12:52:37,445 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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 64 [2021-11-02 12:52:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:37,453 INFO L225 Difference]: With dead ends: 586 [2021-11-02 12:52:37,453 INFO L226 Difference]: Without dead ends: 290 [2021-11-02 12:52:37,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 12:52:37,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2972.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.06ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3252.47ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:37,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 376 Unknown, 0 Unchecked, 4.06ms Time], IncrementalHoareTripleChecker [0 Valid, 375 Invalid, 1 Unknown, 0 Unchecked, 3252.47ms Time] [2021-11-02 12:52:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-02 12:52:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-02 12:52:37,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3505535055350553) internal successors, (366), 289 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-02 12:52:37,499 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-02 12:52:37,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:37,500 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-02 12:52:37,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 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) [2021-11-02 12:52:37,500 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-02 12:52:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 12:52:37,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:37,502 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] [2021-11-02 12:52:37,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 12:52:37,502 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-02 12:52:37,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:37,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074447234] [2021-11-02 12:52:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:37,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:37,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074447234] [2021-11-02 12:52:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074447234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:37,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:37,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:37,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821800600] [2021-11-02 12:52:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:37,817 INFO L87 Difference]: Start difference. First operand 290 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-02 12:52:39,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:41,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:41,890 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-02 12:52:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:52:41,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 64 [2021-11-02 12:52:41,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:41,893 INFO L225 Difference]: With dead ends: 550 [2021-11-02 12:52:41,893 INFO L226 Difference]: Without dead ends: 290 [2021-11-02 12:52:41,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.61ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:41,894 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 504 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3682.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.32ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4004.03ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:41,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 0 Invalid, 570 Unknown, 0 Unchecked, 15.32ms Time], IncrementalHoareTripleChecker [10 Valid, 559 Invalid, 1 Unknown, 0 Unchecked, 4004.03ms Time] [2021-11-02 12:52:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-02 12:52:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-02 12:52:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 271 states have (on average 1.3394833948339484) internal successors, (363), 289 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-02 12:52:41,905 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 64 [2021-11-02 12:52:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:41,905 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-02 12:52:41,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-11-02 12:52:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-02 12:52:41,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:52:41,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:41,907 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] [2021-11-02 12:52:41,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 12:52:41,908 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-02 12:52:41,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:41,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402410112] [2021-11-02 12:52:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:41,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:42,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:42,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402410112] [2021-11-02 12:52:42,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402410112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:42,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:42,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:42,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918057684] [2021-11-02 12:52:42,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:42,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:42,157 INFO L87 Difference]: Start difference. First operand 290 states and 363 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) [2021-11-02 12:52:44,200 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:48,534 INFO L93 Difference]: Finished difference Result 757 states and 981 transitions. [2021-11-02 12:52:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:52:48,535 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 [2021-11-02 12:52:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:48,537 INFO L225 Difference]: With dead ends: 757 [2021-11-02 12:52:48,537 INFO L226 Difference]: Without dead ends: 488 [2021-11-02 12:52:48,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.88ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:48,538 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5878.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.97ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6281.76ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:48,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 1434 Unknown, 0 Unchecked, 10.97ms Time], IncrementalHoareTripleChecker [33 Valid, 1400 Invalid, 1 Unknown, 0 Unchecked, 6281.76ms Time] [2021-11-02 12:52:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-02 12:52:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-02 12:52:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.3183391003460208) internal successors, (381), 307 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 381 transitions. [2021-11-02 12:52:48,549 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 381 transitions. Word has length 76 [2021-11-02 12:52:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:48,549 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 381 transitions. [2021-11-02 12:52:48,549 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) [2021-11-02 12:52:48,550 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 381 transitions. [2021-11-02 12:52:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:52:48,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:48,552 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] [2021-11-02 12:52:48,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 12:52:48,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-02 12:52:48,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:48,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262082582] [2021-11-02 12:52:48,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:48,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:48,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:48,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262082582] [2021-11-02 12:52:48,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262082582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:48,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:48,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:48,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587671706] [2021-11-02 12:52:48,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:48,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:48,830 INFO L87 Difference]: Start difference. First operand 308 states and 381 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) [2021-11-02 12:52:50,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:54,474 INFO L93 Difference]: Finished difference Result 675 states and 850 transitions. [2021-11-02 12:52:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:52:54,478 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 [2021-11-02 12:52:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:54,481 INFO L225 Difference]: With dead ends: 675 [2021-11-02 12:52:54,481 INFO L226 Difference]: Without dead ends: 398 [2021-11-02 12:52:54,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.50ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:54,482 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 207 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5103.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.12ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5556.57ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:54,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 0 Invalid, 1147 Unknown, 0 Unchecked, 10.12ms Time], IncrementalHoareTripleChecker [33 Valid, 1113 Invalid, 1 Unknown, 0 Unchecked, 5556.57ms Time] [2021-11-02 12:52:54,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-02 12:52:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 326. [2021-11-02 12:52:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.299674267100977) internal successors, (399), 325 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2021-11-02 12:52:54,510 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 76 [2021-11-02 12:52:54,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:54,511 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2021-11-02 12:52:54,512 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) [2021-11-02 12:52:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2021-11-02 12:52:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 12:52:54,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:54,516 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] [2021-11-02 12:52:54,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 12:52:54,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-02 12:52:54,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:54,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160122615] [2021-11-02 12:52:54,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:54,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:54,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:54,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160122615] [2021-11-02 12:52:54,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160122615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:54,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:54,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:52:54,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870054238] [2021-11-02 12:52:54,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:52:54,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:52:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:52:54,806 INFO L87 Difference]: Start difference. First operand 326 states and 399 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) [2021-11-02 12:52:56,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:52:58,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:52:58,826 INFO L93 Difference]: Finished difference Result 586 states and 717 transitions. [2021-11-02 12:52:58,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:52:58,827 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 [2021-11-02 12:52:58,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:52:58,828 INFO L225 Difference]: With dead ends: 586 [2021-11-02 12:52:58,828 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 12:52:58,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:52:58,829 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 480 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3685.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3944.86ms IncrementalHoareTripleChecker+Time [2021-11-02 12:52:58,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 0 Invalid, 568 Unknown, 0 Unchecked, 7.36ms Time], IncrementalHoareTripleChecker [9 Valid, 558 Invalid, 1 Unknown, 0 Unchecked, 3944.86ms Time] [2021-11-02 12:52:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 12:52:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-02 12:52:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.293159609120521) internal successors, (397), 325 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:52:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2021-11-02 12:52:58,838 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 76 [2021-11-02 12:52:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:52:58,839 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2021-11-02 12:52:58,839 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) [2021-11-02 12:52:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2021-11-02 12:52:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 12:52:58,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:52:58,840 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] [2021-11-02 12:52:58,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 12:52:58,841 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:52:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:52:58,842 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-02 12:52:58,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:52:58,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862805476] [2021-11-02 12:52:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:52:58,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:52:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:52:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:52:59,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:52:59,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862805476] [2021-11-02 12:52:59,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862805476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:52:59,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:52:59,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:52:59,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271376381] [2021-11-02 12:52:59,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:52:59,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:52:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:52:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:52:59,316 INFO L87 Difference]: Start difference. First operand 326 states and 397 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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) [2021-11-02 12:53:01,365 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:03,559 INFO L93 Difference]: Finished difference Result 513 states and 619 transitions. [2021-11-02 12:53:03,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:53:03,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 [2021-11-02 12:53:03,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:03,561 INFO L225 Difference]: With dead ends: 513 [2021-11-02 12:53:03,561 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 12:53:03,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 238.76ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:53:03,562 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1115 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3727.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.96ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4065.61ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:03,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 0 Invalid, 650 Unknown, 0 Unchecked, 11.96ms Time], IncrementalHoareTripleChecker [11 Valid, 638 Invalid, 1 Unknown, 0 Unchecked, 4065.61ms Time] [2021-11-02 12:53:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 12:53:03,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-02 12:53:03,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.289902280130293) internal successors, (396), 325 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2021-11-02 12:53:03,571 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 82 [2021-11-02 12:53:03,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:03,571 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2021-11-02 12:53:03,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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) [2021-11-02 12:53:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2021-11-02 12:53:03,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 12:53:03,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:03,572 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] [2021-11-02 12:53:03,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 12:53:03,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1668683435, now seen corresponding path program 1 times [2021-11-02 12:53:03,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:03,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818034688] [2021-11-02 12:53:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:03,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:04,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:04,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:04,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818034688] [2021-11-02 12:53:04,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818034688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:04,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:04,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:53:04,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321067553] [2021-11-02 12:53:04,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:53:04,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:53:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:53:04,010 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2021-11-02 12:53:06,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:08,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:08,595 INFO L93 Difference]: Finished difference Result 460 states and 548 transitions. [2021-11-02 12:53:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 12:53:08,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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 [2021-11-02 12:53:08,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:08,597 INFO L225 Difference]: With dead ends: 460 [2021-11-02 12:53:08,597 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 12:53:08,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 360.64ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-02 12:53:08,598 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1320 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4008.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.46ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4331.25ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:08,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 0 Invalid, 778 Unknown, 0 Unchecked, 10.46ms Time], IncrementalHoareTripleChecker [12 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 4331.25ms Time] [2021-11-02 12:53:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 12:53:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-02 12:53:08,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.283387622149837) internal successors, (394), 325 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2021-11-02 12:53:08,604 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 88 [2021-11-02 12:53:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:08,605 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2021-11-02 12:53:08,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 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) [2021-11-02 12:53:08,607 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2021-11-02 12:53:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 12:53:08,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:08,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:08,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 12:53:08,609 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-02 12:53:08,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:08,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305947473] [2021-11-02 12:53:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:08,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:08,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:08,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305947473] [2021-11-02 12:53:08,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305947473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:08,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:08,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:53:08,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136047625] [2021-11-02 12:53:08,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:53:08,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:53:08,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:53:08,939 INFO L87 Difference]: Start difference. First operand 326 states and 394 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:10,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:13,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:13,564 INFO L93 Difference]: Finished difference Result 534 states and 641 transitions. [2021-11-02 12:53:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 12:53:13,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-02 12:53:13,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:13,565 INFO L225 Difference]: With dead ends: 534 [2021-11-02 12:53:13,565 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 12:53:13,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.88ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:53:13,566 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4253.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.02ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4581.42ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:13,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 844 Unknown, 0 Unchecked, 5.02ms Time], IncrementalHoareTripleChecker [4 Valid, 839 Invalid, 1 Unknown, 0 Unchecked, 4581.42ms Time] [2021-11-02 12:53:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 12:53:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-02 12:53:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 307 states have (on average 1.280130293159609) internal successors, (393), 325 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-02 12:53:13,571 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 94 [2021-11-02 12:53:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:13,571 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-02 12:53:13,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:13,572 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-02 12:53:13,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 12:53:13,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:13,572 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, 1, 1, 1] [2021-11-02 12:53:13,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 12:53:13,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-02 12:53:13,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:13,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429450205] [2021-11-02 12:53:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:13,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:14,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:14,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429450205] [2021-11-02 12:53:14,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429450205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:14,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:14,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:53:14,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261945585] [2021-11-02 12:53:14,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:53:14,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:14,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:53:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:53:14,029 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:16,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:20,858 INFO L93 Difference]: Finished difference Result 536 states and 627 transitions. [2021-11-02 12:53:20,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:53:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2021-11-02 12:53:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:20,861 INFO L225 Difference]: With dead ends: 536 [2021-11-02 12:53:20,861 INFO L226 Difference]: Without dead ends: 528 [2021-11-02 12:53:20,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 223.50ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:53:20,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 383 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6199.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.45ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6615.98ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:20,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 0 Invalid, 1677 Unknown, 0 Unchecked, 10.45ms Time], IncrementalHoareTripleChecker [66 Valid, 1610 Invalid, 1 Unknown, 0 Unchecked, 6615.98ms Time] [2021-11-02 12:53:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-02 12:53:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-02 12:53:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 341 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 409 transitions. [2021-11-02 12:53:20,871 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 409 transitions. Word has length 100 [2021-11-02 12:53:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:20,871 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 409 transitions. [2021-11-02 12:53:20,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 409 transitions. [2021-11-02 12:53:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 12:53:20,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:20,873 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:20,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 12:53:20,873 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-02 12:53:20,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:20,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855065894] [2021-11-02 12:53:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:20,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:21,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:21,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855065894] [2021-11-02 12:53:21,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855065894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:21,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:21,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 12:53:21,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251685269] [2021-11-02 12:53:21,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 12:53:21,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 12:53:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:53:21,171 INFO L87 Difference]: Start difference. First operand 342 states and 409 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:23,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:27,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:27,704 INFO L93 Difference]: Finished difference Result 957 states and 1143 transitions. [2021-11-02 12:53:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 12:53:27,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-02 12:53:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:27,706 INFO L225 Difference]: With dead ends: 957 [2021-11-02 12:53:27,707 INFO L226 Difference]: Without dead ends: 643 [2021-11-02 12:53:27,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 113.43ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:53:27,708 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 561 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 42 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5950.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.30ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6397.71ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:27,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 0 Invalid, 1421 Unknown, 0 Unchecked, 14.30ms Time], IncrementalHoareTripleChecker [42 Valid, 1378 Invalid, 1 Unknown, 0 Unchecked, 6397.71ms Time] [2021-11-02 12:53:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-02 12:53:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 369. [2021-11-02 12:53:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 350 states have (on average 1.2457142857142858) internal successors, (436), 368 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 436 transitions. [2021-11-02 12:53:27,717 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 436 transitions. Word has length 104 [2021-11-02 12:53:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:27,718 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 436 transitions. [2021-11-02 12:53:27,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 436 transitions. [2021-11-02 12:53:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 12:53:27,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:27,720 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:27,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 12:53:27,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash -309726663, now seen corresponding path program 1 times [2021-11-02 12:53:27,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:27,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446296087] [2021-11-02 12:53:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:27,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:28,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:28,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446296087] [2021-11-02 12:53:28,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446296087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:28,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:28,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:53:28,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042873603] [2021-11-02 12:53:28,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:53:28,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:28,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:53:28,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:53:28,893 INFO L87 Difference]: Start difference. First operand 369 states and 436 transitions. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:30,993 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:53:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:53:49,355 INFO L93 Difference]: Finished difference Result 1207 states and 1434 transitions. [2021-11-02 12:53:49,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 12:53:49,356 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-02 12:53:49,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:53:49,359 INFO L225 Difference]: With dead ends: 1207 [2021-11-02 12:53:49,359 INFO L226 Difference]: Without dead ends: 999 [2021-11-02 12:53:49,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 4333.90ms TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 12:53:49,363 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1672 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15539.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.18ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16464.73ms IncrementalHoareTripleChecker+Time [2021-11-02 12:53:49,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 0 Invalid, 5144 Unknown, 0 Unchecked, 45.18ms Time], IncrementalHoareTripleChecker [102 Valid, 5041 Invalid, 1 Unknown, 0 Unchecked, 16464.73ms Time] [2021-11-02 12:53:49,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-02 12:53:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 400. [2021-11-02 12:53:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 381 states have (on average 1.2440944881889764) internal successors, (474), 399 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 474 transitions. [2021-11-02 12:53:49,375 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 474 transitions. Word has length 104 [2021-11-02 12:53:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:53:49,375 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 474 transitions. [2021-11-02 12:53:49,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 474 transitions. [2021-11-02 12:53:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-02 12:53:49,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:53:49,376 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:53:49,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 12:53:49,377 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:53:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:53:49,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1898074565, now seen corresponding path program 1 times [2021-11-02 12:53:49,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:53:49,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27165267] [2021-11-02 12:53:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:53:49,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:53:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:53:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:53:52,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:53:52,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27165267] [2021-11-02 12:53:52,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27165267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:53:52,111 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:53:52,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:53:52,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441894378] [2021-11-02 12:53:52,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:53:52,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:53:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:53:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:53:52,112 INFO L87 Difference]: Start difference. First operand 400 states and 474 transitions. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:53:54,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:01,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:01,798 INFO L93 Difference]: Finished difference Result 820 states and 975 transitions. [2021-11-02 12:54:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:54:01,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2021-11-02 12:54:01,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:01,800 INFO L225 Difference]: With dead ends: 820 [2021-11-02 12:54:01,800 INFO L226 Difference]: Without dead ends: 456 [2021-11-02 12:54:01,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 598.11ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:54:01,801 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 555 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8636.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.14ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9197.18ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:01,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 0 Invalid, 2291 Unknown, 0 Unchecked, 21.14ms Time], IncrementalHoareTripleChecker [26 Valid, 2264 Invalid, 1 Unknown, 0 Unchecked, 9197.18ms Time] [2021-11-02 12:54:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-02 12:54:01,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 398. [2021-11-02 12:54:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 379 states have (on average 1.2427440633245384) internal successors, (471), 397 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:01,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 471 transitions. [2021-11-02 12:54:01,810 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 471 transitions. Word has length 104 [2021-11-02 12:54:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:01,810 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 471 transitions. [2021-11-02 12:54:01,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:01,811 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 471 transitions. [2021-11-02 12:54:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 12:54:01,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:01,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:01,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 12:54:01,812 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:54:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -548921, now seen corresponding path program 1 times [2021-11-02 12:54:01,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:01,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515875646] [2021-11-02 12:54:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:01,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:04,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:04,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515875646] [2021-11-02 12:54:04,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515875646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:04,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:04,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-02 12:54:04,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613538872] [2021-11-02 12:54:04,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 12:54:04,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 12:54:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-11-02 12:54:04,778 INFO L87 Difference]: Start difference. First operand 398 states and 471 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:06,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:54:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:54:52,456 INFO L93 Difference]: Finished difference Result 1390 states and 1668 transitions. [2021-11-02 12:54:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-02 12:54:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-02 12:54:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:54:52,460 INFO L225 Difference]: With dead ends: 1390 [2021-11-02 12:54:52,460 INFO L226 Difference]: Without dead ends: 1087 [2021-11-02 12:54:52,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 7654.65ms TimeCoverageRelationStatistics Valid=1060, Invalid=4640, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 12:54:52,461 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1427 mSDsluCounter, 8400 mSDsCounter, 0 mSdLazyCounter, 13101 mSolverCounterSat, 99 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38843.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 122.14ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 13101 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40883.63ms IncrementalHoareTripleChecker+Time [2021-11-02 12:54:52,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1427 Valid, 0 Invalid, 13201 Unknown, 0 Unchecked, 122.14ms Time], IncrementalHoareTripleChecker [99 Valid, 13101 Invalid, 1 Unknown, 0 Unchecked, 40883.63ms Time] [2021-11-02 12:54:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2021-11-02 12:54:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 495. [2021-11-02 12:54:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 476 states have (on average 1.2373949579831933) internal successors, (589), 494 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:52,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 589 transitions. [2021-11-02 12:54:52,473 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 589 transitions. Word has length 108 [2021-11-02 12:54:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:54:52,473 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 589 transitions. [2021-11-02 12:54:52,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 589 transitions. [2021-11-02 12:54:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 12:54:52,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:54:52,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:54:52,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 12:54:52,475 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:54:52,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:54:52,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1959123707, now seen corresponding path program 1 times [2021-11-02 12:54:52,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:54:52,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820355283] [2021-11-02 12:54:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:54:52,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:54:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:54:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:54:53,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:54:53,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820355283] [2021-11-02 12:54:53,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820355283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:54:53,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:54:53,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:54:53,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802589607] [2021-11-02 12:54:53,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:54:53,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:54:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:54:53,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:54:53,241 INFO L87 Difference]: Start difference. First operand 495 states and 589 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:54:55,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:02,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:02,821 INFO L93 Difference]: Finished difference Result 998 states and 1165 transitions. [2021-11-02 12:55:02,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 12:55:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-02 12:55:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:02,823 INFO L225 Difference]: With dead ends: 998 [2021-11-02 12:55:02,823 INFO L226 Difference]: Without dead ends: 508 [2021-11-02 12:55:02,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 257.65ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:55:02,824 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 58 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8810.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.97ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9376.24ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:02,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 2651 Unknown, 0 Unchecked, 14.97ms Time], IncrementalHoareTripleChecker [58 Valid, 2592 Invalid, 1 Unknown, 0 Unchecked, 9376.24ms Time] [2021-11-02 12:55:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-02 12:55:02,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 398. [2021-11-02 12:55:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 379 states have (on average 1.2242744063324538) internal successors, (464), 397 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) [2021-11-02 12:55:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 464 transitions. [2021-11-02 12:55:02,832 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 464 transitions. Word has length 108 [2021-11-02 12:55:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:02,832 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 464 transitions. [2021-11-02 12:55:02,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:02,832 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 464 transitions. [2021-11-02 12:55:02,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 12:55:02,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:02,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:02,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 12:55:02,833 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:55:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:02,833 INFO L85 PathProgramCache]: Analyzing trace with hash -596589076, now seen corresponding path program 1 times [2021-11-02 12:55:02,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:02,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534372361] [2021-11-02 12:55:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:02,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:06,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:06,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534372361] [2021-11-02 12:55:06,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534372361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:06,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:06,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 12:55:06,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525180729] [2021-11-02 12:55:06,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 12:55:06,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:06,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 12:55:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-02 12:55:06,165 INFO L87 Difference]: Start difference. First operand 398 states and 464 transitions. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:08,295 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:19,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:19,468 INFO L93 Difference]: Finished difference Result 1031 states and 1209 transitions. [2021-11-02 12:55:19,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 12:55:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-02 12:55:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:19,470 INFO L225 Difference]: With dead ends: 1031 [2021-11-02 12:55:19,470 INFO L226 Difference]: Without dead ends: 724 [2021-11-02 12:55:19,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1723.26ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-11-02 12:55:19,471 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1055 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 3470 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11383.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.60ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3470 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12086.44ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:19,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 0 Invalid, 3525 Unknown, 0 Unchecked, 29.60ms Time], IncrementalHoareTripleChecker [54 Valid, 3470 Invalid, 1 Unknown, 0 Unchecked, 12086.44ms Time] [2021-11-02 12:55:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-02 12:55:19,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 449. [2021-11-02 12:55:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 430 states have (on average 1.2186046511627906) internal successors, (524), 448 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 524 transitions. [2021-11-02 12:55:19,481 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 524 transitions. Word has length 110 [2021-11-02 12:55:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:19,481 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 524 transitions. [2021-11-02 12:55:19,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 524 transitions. [2021-11-02 12:55:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 12:55:19,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:19,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:19,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 12:55:19,483 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:55:19,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1232808230, now seen corresponding path program 1 times [2021-11-02 12:55:19,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:19,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228492436] [2021-11-02 12:55:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:19,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:19,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:19,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228492436] [2021-11-02 12:55:19,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228492436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:19,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:19,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 12:55:19,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185491663] [2021-11-02 12:55:19,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 12:55:19,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 12:55:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 12:55:19,628 INFO L87 Difference]: Start difference. First operand 449 states and 524 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:21,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:25,335 INFO L93 Difference]: Finished difference Result 857 states and 997 transitions. [2021-11-02 12:55:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 12:55:25,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-02 12:55:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:25,337 INFO L225 Difference]: With dead ends: 857 [2021-11-02 12:55:25,337 INFO L226 Difference]: Without dead ends: 406 [2021-11-02 12:55:25,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 12:55:25,338 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5199.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5632.14ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:25,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 1095 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [28 Valid, 1066 Invalid, 1 Unknown, 0 Unchecked, 5632.14ms Time] [2021-11-02 12:55:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-02 12:55:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 382. [2021-11-02 12:55:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 363 states have (on average 1.184573002754821) internal successors, (430), 381 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 430 transitions. [2021-11-02 12:55:25,346 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 430 transitions. Word has length 110 [2021-11-02 12:55:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:25,346 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 430 transitions. [2021-11-02 12:55:25,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 430 transitions. [2021-11-02 12:55:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 12:55:25,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:25,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:25,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 12:55:25,350 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:55:25,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:25,351 INFO L85 PathProgramCache]: Analyzing trace with hash -666588708, now seen corresponding path program 1 times [2021-11-02 12:55:25,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:25,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625897831] [2021-11-02 12:55:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:25,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:25,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:25,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625897831] [2021-11-02 12:55:25,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625897831] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:25,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:25,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 12:55:25,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849535220] [2021-11-02 12:55:25,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 12:55:25,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 12:55:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 12:55:25,855 INFO L87 Difference]: Start difference. First operand 382 states and 430 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:27,910 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:39,809 INFO L93 Difference]: Finished difference Result 1132 states and 1259 transitions. [2021-11-02 12:55:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:55:39,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-02 12:55:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:39,812 INFO L225 Difference]: With dead ends: 1132 [2021-11-02 12:55:39,812 INFO L226 Difference]: Without dead ends: 827 [2021-11-02 12:55:39,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1215.01ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:55:39,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 758 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 3404 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12192.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.39ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3404 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12804.67ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:39,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 0 Invalid, 3439 Unknown, 0 Unchecked, 27.39ms Time], IncrementalHoareTripleChecker [34 Valid, 3404 Invalid, 1 Unknown, 0 Unchecked, 12804.67ms Time] [2021-11-02 12:55:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-11-02 12:55:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 390. [2021-11-02 12:55:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 371 states have (on average 1.1832884097035041) internal successors, (439), 389 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) [2021-11-02 12:55:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 439 transitions. [2021-11-02 12:55:39,825 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 439 transitions. Word has length 113 [2021-11-02 12:55:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:39,826 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 439 transitions. [2021-11-02 12:55:39,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 439 transitions. [2021-11-02 12:55:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 12:55:39,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:39,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:39,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 12:55:39,827 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:55:39,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1276333328, now seen corresponding path program 1 times [2021-11-02 12:55:39,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:39,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836001160] [2021-11-02 12:55:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:39,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:40,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:40,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836001160] [2021-11-02 12:55:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836001160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:40,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:40,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-02 12:55:40,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670590918] [2021-11-02 12:55:40,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 12:55:40,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:40,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 12:55:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:55:40,682 INFO L87 Difference]: Start difference. First operand 390 states and 439 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:42,953 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:55:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:55:54,513 INFO L93 Difference]: Finished difference Result 1270 states and 1431 transitions. [2021-11-02 12:55:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 12:55:54,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-02 12:55:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:55:54,515 INFO L225 Difference]: With dead ends: 1270 [2021-11-02 12:55:54,516 INFO L226 Difference]: Without dead ends: 960 [2021-11-02 12:55:54,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1208.76ms TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:55:54,516 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2101 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 3658 mSolverCounterSat, 79 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12054.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.61ms SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3658 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12820.71ms IncrementalHoareTripleChecker+Time [2021-11-02 12:55:54,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 0 Invalid, 3738 Unknown, 0 Unchecked, 33.61ms Time], IncrementalHoareTripleChecker [79 Valid, 3658 Invalid, 1 Unknown, 0 Unchecked, 12820.71ms Time] [2021-11-02 12:55:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2021-11-02 12:55:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 436. [2021-11-02 12:55:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 417 states have (on average 1.170263788968825) internal successors, (488), 435 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 488 transitions. [2021-11-02 12:55:54,526 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 488 transitions. Word has length 113 [2021-11-02 12:55:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:55:54,526 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 488 transitions. [2021-11-02 12:55:54,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 488 transitions. [2021-11-02 12:55:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 12:55:54,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:55:54,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:55:54,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 12:55:54,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:55:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:55:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash 281639630, now seen corresponding path program 1 times [2021-11-02 12:55:54,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:55:54,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324517956] [2021-11-02 12:55:54,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:55:54,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:55:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:55:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:55:56,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:55:56,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324517956] [2021-11-02 12:55:56,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324517956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:55:56,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:55:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 12:55:56,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616114671] [2021-11-02 12:55:56,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 12:55:56,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:55:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 12:55:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-11-02 12:55:56,823 INFO L87 Difference]: Start difference. First operand 436 states and 488 transitions. Second operand has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:55:58,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:25,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:25,430 INFO L93 Difference]: Finished difference Result 1245 states and 1384 transitions. [2021-11-02 12:56:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 12:56:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-02 12:56:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:25,432 INFO L225 Difference]: With dead ends: 1245 [2021-11-02 12:56:25,432 INFO L226 Difference]: Without dead ends: 952 [2021-11-02 12:56:25,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 6311.96ms TimeCoverageRelationStatistics Valid=755, Invalid=2785, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 12:56:25,434 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1720 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 7349 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21891.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.54ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 7349 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23071.50ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:25,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 0 Invalid, 7458 Unknown, 0 Unchecked, 65.54ms Time], IncrementalHoareTripleChecker [108 Valid, 7349 Invalid, 1 Unknown, 0 Unchecked, 23071.50ms Time] [2021-11-02 12:56:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-11-02 12:56:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 482. [2021-11-02 12:56:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 463 states have (on average 1.1598272138228942) internal successors, (537), 481 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 537 transitions. [2021-11-02 12:56:25,445 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 537 transitions. Word has length 113 [2021-11-02 12:56:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:25,446 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 537 transitions. [2021-11-02 12:56:25,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.947368421052632) internal successors, (113), 19 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:25,446 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 537 transitions. [2021-11-02 12:56:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 12:56:25,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:25,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:25,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 12:56:25,447 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:56:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1552771201, now seen corresponding path program 1 times [2021-11-02 12:56:25,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:25,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44976818] [2021-11-02 12:56:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:25,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:25,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:25,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44976818] [2021-11-02 12:56:25,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44976818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:25,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:25,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 12:56:25,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117837472] [2021-11-02 12:56:25,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 12:56:25,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 12:56:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 12:56:25,816 INFO L87 Difference]: Start difference. First operand 482 states and 537 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:28,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:56:39,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:56:39,539 INFO L93 Difference]: Finished difference Result 1127 states and 1249 transitions. [2021-11-02 12:56:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 12:56:39,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-02 12:56:39,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:56:39,542 INFO L225 Difference]: With dead ends: 1127 [2021-11-02 12:56:39,542 INFO L226 Difference]: Without dead ends: 887 [2021-11-02 12:56:39,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 942.82ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:56:39,543 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 699 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12125.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.52ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12817.36ms IncrementalHoareTripleChecker+Time [2021-11-02 12:56:39,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 0 Invalid, 3852 Unknown, 0 Unchecked, 23.52ms Time], IncrementalHoareTripleChecker [49 Valid, 3802 Invalid, 1 Unknown, 0 Unchecked, 12817.36ms Time] [2021-11-02 12:56:39,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-02 12:56:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 482. [2021-11-02 12:56:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 463 states have (on average 1.1598272138228942) internal successors, (537), 481 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 537 transitions. [2021-11-02 12:56:39,556 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 537 transitions. Word has length 116 [2021-11-02 12:56:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:56:39,556 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 537 transitions. [2021-11-02 12:56:39,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 537 transitions. [2021-11-02 12:56:39,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 12:56:39,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:56:39,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:56:39,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 12:56:39,558 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:56:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:56:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1537252483, now seen corresponding path program 1 times [2021-11-02 12:56:39,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:56:39,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839658927] [2021-11-02 12:56:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:56:39,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:56:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:56:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:56:43,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:56:43,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839658927] [2021-11-02 12:56:43,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839658927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:56:43,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:56:43,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-02 12:56:43,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305528798] [2021-11-02 12:56:43,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 12:56:43,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:56:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 12:56:43,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:56:43,702 INFO L87 Difference]: Start difference. First operand 482 states and 537 transitions. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:56:45,750 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:01,489 INFO L93 Difference]: Finished difference Result 1125 states and 1264 transitions. [2021-11-02 12:57:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 12:57:01,490 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-02 12:57:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:01,492 INFO L225 Difference]: With dead ends: 1125 [2021-11-02 12:57:01,492 INFO L226 Difference]: Without dead ends: 885 [2021-11-02 12:57:01,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2437.37ms TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2021-11-02 12:57:01,493 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1207 mSDsluCounter, 2967 mSDsCounter, 0 mSdLazyCounter, 4667 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15104.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.17ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16052.70ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:01,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 0 Invalid, 4709 Unknown, 0 Unchecked, 36.17ms Time], IncrementalHoareTripleChecker [41 Valid, 4667 Invalid, 1 Unknown, 0 Unchecked, 16052.70ms Time] [2021-11-02 12:57:01,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-02 12:57:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 477. [2021-11-02 12:57:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 458 states have (on average 1.1615720524017468) internal successors, (532), 476 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:01,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 532 transitions. [2021-11-02 12:57:01,505 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 532 transitions. Word has length 116 [2021-11-02 12:57:01,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:01,505 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 532 transitions. [2021-11-02 12:57:01,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:01,505 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 532 transitions. [2021-11-02 12:57:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:57:01,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:01,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:01,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 12:57:01,507 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:57:01,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:01,508 INFO L85 PathProgramCache]: Analyzing trace with hash 437438573, now seen corresponding path program 1 times [2021-11-02 12:57:01,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:01,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488633934] [2021-11-02 12:57:01,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:01,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:01,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:01,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488633934] [2021-11-02 12:57:01,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488633934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:01,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:01,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 12:57:01,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746532502] [2021-11-02 12:57:01,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 12:57:01,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 12:57:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 12:57:01,837 INFO L87 Difference]: Start difference. First operand 477 states and 532 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:03,882 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:10,417 INFO L93 Difference]: Finished difference Result 1184 states and 1320 transitions. [2021-11-02 12:57:10,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 12:57:10,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:57:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:10,419 INFO L225 Difference]: With dead ends: 1184 [2021-11-02 12:57:10,419 INFO L226 Difference]: Without dead ends: 835 [2021-11-02 12:57:10,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 307.19ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-02 12:57:10,420 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 405 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7858.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.55ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8270.52ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:10,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 0 Invalid, 2130 Unknown, 0 Unchecked, 14.55ms Time], IncrementalHoareTripleChecker [7 Valid, 2122 Invalid, 1 Unknown, 0 Unchecked, 8270.52ms Time] [2021-11-02 12:57:10,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-11-02 12:57:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 481. [2021-11-02 12:57:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 462 states have (on average 1.1601731601731602) internal successors, (536), 480 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 536 transitions. [2021-11-02 12:57:10,431 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 536 transitions. Word has length 119 [2021-11-02 12:57:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:10,431 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 536 transitions. [2021-11-02 12:57:10,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 536 transitions. [2021-11-02 12:57:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-02 12:57:10,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:10,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:10,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 12:57:10,433 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:57:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -778715153, now seen corresponding path program 1 times [2021-11-02 12:57:10,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:10,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499564582] [2021-11-02 12:57:10,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:10,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:12,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:12,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:12,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499564582] [2021-11-02 12:57:12,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499564582] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:12,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:12,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 12:57:12,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642833358] [2021-11-02 12:57:12,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 12:57:12,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 12:57:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-02 12:57:12,843 INFO L87 Difference]: Start difference. First operand 481 states and 536 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:15,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:57:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:57:57,289 INFO L93 Difference]: Finished difference Result 1596 states and 1768 transitions. [2021-11-02 12:57:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-02 12:57:57,290 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-02 12:57:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:57:57,293 INFO L225 Difference]: With dead ends: 1596 [2021-11-02 12:57:57,293 INFO L226 Difference]: Without dead ends: 1303 [2021-11-02 12:57:57,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 15299.98ms TimeCoverageRelationStatistics Valid=2056, Invalid=9500, Unknown=0, NotChecked=0, Total=11556 [2021-11-02 12:57:57,296 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2987 mSDsluCounter, 5620 mSDsCounter, 0 mSdLazyCounter, 9419 mSolverCounterSat, 180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28407.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2987 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 96.97ms SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 9419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30003.02ms IncrementalHoareTripleChecker+Time [2021-11-02 12:57:57,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2987 Valid, 0 Invalid, 9600 Unknown, 0 Unchecked, 96.97ms Time], IncrementalHoareTripleChecker [180 Valid, 9419 Invalid, 1 Unknown, 0 Unchecked, 30003.02ms Time] [2021-11-02 12:57:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-02 12:57:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 491. [2021-11-02 12:57:57,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 472 states have (on average 1.152542372881356) internal successors, (544), 490 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:57,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 544 transitions. [2021-11-02 12:57:57,314 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 544 transitions. Word has length 119 [2021-11-02 12:57:57,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:57:57,315 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 544 transitions. [2021-11-02 12:57:57,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:57:57,315 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 544 transitions. [2021-11-02 12:57:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 12:57:57,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:57:57,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:57:57,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-02 12:57:57,317 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:57:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:57:57,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1881624820, now seen corresponding path program 1 times [2021-11-02 12:57:57,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:57:57,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247613739] [2021-11-02 12:57:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:57:57,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:57:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:57:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:57:58,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:57:58,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247613739] [2021-11-02 12:57:58,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247613739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:57:58,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:57:58,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 12:57:58,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049784665] [2021-11-02 12:57:58,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 12:57:58,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:57:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 12:57:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 12:57:58,218 INFO L87 Difference]: Start difference. First operand 491 states and 544 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:00,266 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:11,756 INFO L93 Difference]: Finished difference Result 1263 states and 1411 transitions. [2021-11-02 12:58:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 12:58:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-02 12:58:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:11,759 INFO L225 Difference]: With dead ends: 1263 [2021-11-02 12:58:11,759 INFO L226 Difference]: Without dead ends: 1047 [2021-11-02 12:58:11,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2795.41ms TimeCoverageRelationStatistics Valid=225, Invalid=831, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 12:58:11,760 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1341 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 2980 mSolverCounterSat, 95 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10271.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.16ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10966.88ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:11,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 0 Invalid, 3076 Unknown, 0 Unchecked, 27.16ms Time], IncrementalHoareTripleChecker [95 Valid, 2980 Invalid, 1 Unknown, 0 Unchecked, 10966.88ms Time] [2021-11-02 12:58:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-02 12:58:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 516. [2021-11-02 12:58:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 497 states have (on average 1.1468812877263581) internal successors, (570), 515 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 570 transitions. [2021-11-02 12:58:11,789 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 570 transitions. Word has length 122 [2021-11-02 12:58:11,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:11,789 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 570 transitions. [2021-11-02 12:58:11,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 570 transitions. [2021-11-02 12:58:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 12:58:11,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:11,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:11,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 12:58:11,790 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:58:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 824994574, now seen corresponding path program 1 times [2021-11-02 12:58:11,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:11,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892046281] [2021-11-02 12:58:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:11,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:15,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:15,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892046281] [2021-11-02 12:58:15,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892046281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:15,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:15,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-02 12:58:15,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752641271] [2021-11-02 12:58:15,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 12:58:15,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 12:58:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-02 12:58:15,759 INFO L87 Difference]: Start difference. First operand 516 states and 570 transitions. Second operand has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:17,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:37,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:37,480 INFO L93 Difference]: Finished difference Result 1077 states and 1200 transitions. [2021-11-02 12:58:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 12:58:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-02 12:58:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:37,483 INFO L225 Difference]: With dead ends: 1077 [2021-11-02 12:58:37,484 INFO L226 Difference]: Without dead ends: 895 [2021-11-02 12:58:37,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 3385.48ms TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 12:58:37,485 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1470 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 5719 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18166.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.84ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 5719 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19218.68ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:37,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 0 Invalid, 5776 Unknown, 0 Unchecked, 53.84ms Time], IncrementalHoareTripleChecker [56 Valid, 5719 Invalid, 1 Unknown, 0 Unchecked, 19218.68ms Time] [2021-11-02 12:58:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-02 12:58:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 626. [2021-11-02 12:58:37,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 607 states have (on average 1.1350906095551894) internal successors, (689), 625 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 689 transitions. [2021-11-02 12:58:37,532 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 689 transitions. Word has length 122 [2021-11-02 12:58:37,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:37,532 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 689 transitions. [2021-11-02 12:58:37,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.777777777777778) internal successors, (122), 18 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:37,533 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 689 transitions. [2021-11-02 12:58:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 12:58:37,547 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:37,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:37,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 12:58:37,548 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:58:37,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:37,549 INFO L85 PathProgramCache]: Analyzing trace with hash -608015608, now seen corresponding path program 1 times [2021-11-02 12:58:37,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:37,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067347393] [2021-11-02 12:58:37,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:37,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:38,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:38,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067347393] [2021-11-02 12:58:38,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067347393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:38,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:38,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:58:38,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79068660] [2021-11-02 12:58:38,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:58:38,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:58:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:58:38,135 INFO L87 Difference]: Start difference. First operand 626 states and 689 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:40,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:58:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:58:49,880 INFO L93 Difference]: Finished difference Result 1065 states and 1183 transitions. [2021-11-02 12:58:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 12:58:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-02 12:58:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:58:49,883 INFO L225 Difference]: With dead ends: 1065 [2021-11-02 12:58:49,883 INFO L226 Difference]: Without dead ends: 917 [2021-11-02 12:58:49,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 796.12ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-11-02 12:58:49,883 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 576 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 34 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10425.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.95ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11066.67ms IncrementalHoareTripleChecker+Time [2021-11-02 12:58:49,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 0 Invalid, 3157 Unknown, 0 Unchecked, 24.95ms Time], IncrementalHoareTripleChecker [34 Valid, 3122 Invalid, 1 Unknown, 0 Unchecked, 11066.67ms Time] [2021-11-02 12:58:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2021-11-02 12:58:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 659. [2021-11-02 12:58:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 640 states have (on average 1.1375) internal successors, (728), 658 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:49,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 728 transitions. [2021-11-02 12:58:49,899 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 728 transitions. Word has length 122 [2021-11-02 12:58:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:58:49,900 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 728 transitions. [2021-11-02 12:58:49,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:49,900 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 728 transitions. [2021-11-02 12:58:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 12:58:49,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:58:49,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:58:49,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 12:58:49,903 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:58:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:58:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash 72042762, now seen corresponding path program 1 times [2021-11-02 12:58:49,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:58:49,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656479425] [2021-11-02 12:58:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:58:49,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:58:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:58:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:58:52,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:58:52,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656479425] [2021-11-02 12:58:52,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656479425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:58:52,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:58:52,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 12:58:52,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012522717] [2021-11-02 12:58:52,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 12:58:52,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:58:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 12:58:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-02 12:58:52,349 INFO L87 Difference]: Start difference. First operand 659 states and 728 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:58:54,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:02,171 INFO L93 Difference]: Finished difference Result 1323 states and 1468 transitions. [2021-11-02 12:59:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 12:59:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-02 12:59:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:02,174 INFO L225 Difference]: With dead ends: 1323 [2021-11-02 12:59:02,174 INFO L226 Difference]: Without dead ends: 848 [2021-11-02 12:59:02,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 928.87ms TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-02 12:59:02,175 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1218 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8517.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.85ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9060.69ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:02,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 0 Invalid, 2371 Unknown, 0 Unchecked, 20.85ms Time], IncrementalHoareTripleChecker [35 Valid, 2335 Invalid, 1 Unknown, 0 Unchecked, 9060.69ms Time] [2021-11-02 12:59:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-02 12:59:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 743. [2021-11-02 12:59:02,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 724 states have (on average 1.1616022099447514) internal successors, (841), 742 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 841 transitions. [2021-11-02 12:59:02,194 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 841 transitions. Word has length 122 [2021-11-02 12:59:02,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:02,195 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 841 transitions. [2021-11-02 12:59:02,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 841 transitions. [2021-11-02 12:59:02,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 12:59:02,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:02,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:02,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 12:59:02,196 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:59:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1579085436, now seen corresponding path program 1 times [2021-11-02 12:59:02,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:02,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206072957] [2021-11-02 12:59:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:02,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:04,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:04,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206072957] [2021-11-02 12:59:04,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206072957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:04,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:04,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-02 12:59:04,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48294566] [2021-11-02 12:59:04,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 12:59:04,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 12:59:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-11-02 12:59:04,498 INFO L87 Difference]: Start difference. First operand 743 states and 841 transitions. Second operand has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:06,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 12:59:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 12:59:36,132 INFO L93 Difference]: Finished difference Result 2136 states and 2440 transitions. [2021-11-02 12:59:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 12:59:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-02 12:59:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 12:59:36,137 INFO L225 Difference]: With dead ends: 2136 [2021-11-02 12:59:36,137 INFO L226 Difference]: Without dead ends: 1713 [2021-11-02 12:59:36,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 7907.05ms TimeCoverageRelationStatistics Valid=797, Invalid=3363, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 12:59:36,146 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2066 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 7877 mSolverCounterSat, 139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23340.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.08ms SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 7877 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24656.02ms IncrementalHoareTripleChecker+Time [2021-11-02 12:59:36,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2066 Valid, 0 Invalid, 8017 Unknown, 0 Unchecked, 72.08ms Time], IncrementalHoareTripleChecker [139 Valid, 7877 Invalid, 1 Unknown, 0 Unchecked, 24656.02ms Time] [2021-11-02 12:59:36,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-11-02 12:59:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 759. [2021-11-02 12:59:36,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1567567567567567) internal successors, (856), 758 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:36,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 856 transitions. [2021-11-02 12:59:36,171 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 856 transitions. Word has length 125 [2021-11-02 12:59:36,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 12:59:36,171 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 856 transitions. [2021-11-02 12:59:36,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.681818181818182) internal successors, (125), 22 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:36,171 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 856 transitions. [2021-11-02 12:59:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 12:59:36,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 12:59:36,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 12:59:36,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 12:59:36,173 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 12:59:36,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 12:59:36,174 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-02 12:59:36,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 12:59:36,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440267859] [2021-11-02 12:59:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 12:59:36,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 12:59:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 12:59:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 12:59:40,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 12:59:40,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440267859] [2021-11-02 12:59:40,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440267859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 12:59:40,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 12:59:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-02 12:59:40,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780809520] [2021-11-02 12:59:40,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 12:59:40,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 12:59:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 12:59:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-11-02 12:59:40,594 INFO L87 Difference]: Start difference. First operand 759 states and 856 transitions. Second operand has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 12:59:42,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:00:36,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:00:36,933 INFO L93 Difference]: Finished difference Result 2214 states and 2502 transitions. [2021-11-02 13:00:36,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-02 13:00:36,933 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-02 13:00:36,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:00:36,938 INFO L225 Difference]: With dead ends: 2214 [2021-11-02 13:00:36,938 INFO L226 Difference]: Without dead ends: 1998 [2021-11-02 13:00:36,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 13732.74ms TimeCoverageRelationStatistics Valid=973, Invalid=5033, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 13:00:36,941 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 4524 mSDsluCounter, 7626 mSDsCounter, 0 mSdLazyCounter, 12037 mSolverCounterSat, 220 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41873.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4524 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 12258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 142.18ms SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 12037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44249.95ms IncrementalHoareTripleChecker+Time [2021-11-02 13:00:36,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4524 Valid, 0 Invalid, 12258 Unknown, 0 Unchecked, 142.18ms Time], IncrementalHoareTripleChecker [220 Valid, 12037 Invalid, 1 Unknown, 0 Unchecked, 44249.95ms Time] [2021-11-02 13:00:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-11-02 13:00:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 767. [2021-11-02 13:00:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 748 states have (on average 1.1550802139037433) internal successors, (864), 766 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 864 transitions. [2021-11-02 13:00:36,969 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 864 transitions. Word has length 125 [2021-11-02 13:00:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:00:36,969 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 864 transitions. [2021-11-02 13:00:36,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.62962962962963) internal successors, (125), 27 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 864 transitions. [2021-11-02 13:00:36,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-02 13:00:36,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:00:36,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:00:36,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-02 13:00:36,971 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:00:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:00:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1038621764, now seen corresponding path program 1 times [2021-11-02 13:00:36,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:00:36,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763855507] [2021-11-02 13:00:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:00:36,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:00:41,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:00:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:00:43,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:00:43,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763855507] [2021-11-02 13:00:43,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763855507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:00:43,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:00:43,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-02 13:00:43,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183863016] [2021-11-02 13:00:43,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 13:00:43,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:00:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 13:00:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-11-02 13:00:43,869 INFO L87 Difference]: Start difference. First operand 767 states and 864 transitions. Second operand has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:00:45,930 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 [] [2021-11-02 13:01:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:09,709 INFO L93 Difference]: Finished difference Result 1565 states and 1787 transitions. [2021-11-02 13:01:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 13:01:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2021-11-02 13:01:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:09,713 INFO L225 Difference]: With dead ends: 1565 [2021-11-02 13:01:09,714 INFO L226 Difference]: Without dead ends: 1248 [2021-11-02 13:01:09,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 5512.43ms TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 13:01:09,715 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2279 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 122 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20229.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.41ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21485.05ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:09,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 0 Invalid, 5049 Unknown, 0 Unchecked, 62.41ms Time], IncrementalHoareTripleChecker [122 Valid, 4926 Invalid, 1 Unknown, 0 Unchecked, 21485.05ms Time] [2021-11-02 13:01:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-02 13:01:09,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 788. [2021-11-02 13:01:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 769 states have (on average 1.1677503250975292) internal successors, (898), 787 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 898 transitions. [2021-11-02 13:01:09,748 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 898 transitions. Word has length 125 [2021-11-02 13:01:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:09,749 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 898 transitions. [2021-11-02 13:01:09,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 898 transitions. [2021-11-02 13:01:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 13:01:09,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:09,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:09,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 13:01:09,751 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:01:09,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:09,752 INFO L85 PathProgramCache]: Analyzing trace with hash -484967015, now seen corresponding path program 1 times [2021-11-02 13:01:09,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:01:09,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520237791] [2021-11-02 13:01:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:09,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:01:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:01:13,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:01:13,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520237791] [2021-11-02 13:01:13,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520237791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:13,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:13,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:01:13,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098507817] [2021-11-02 13:01:13,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:01:13,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:01:13,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:01:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:01:13,264 INFO L87 Difference]: Start difference. First operand 788 states and 898 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:15,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:26,084 INFO L93 Difference]: Finished difference Result 1177 states and 1333 transitions. [2021-11-02 13:01:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 13:01:26,085 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-02 13:01:26,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:26,087 INFO L225 Difference]: With dead ends: 1177 [2021-11-02 13:01:26,087 INFO L226 Difference]: Without dead ends: 860 [2021-11-02 13:01:26,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1570.41ms TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2021-11-02 13:01:26,088 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1572 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10594.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.70ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11450.60ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:26,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 0 Invalid, 2842 Unknown, 0 Unchecked, 30.70ms Time], IncrementalHoareTripleChecker [37 Valid, 2804 Invalid, 1 Unknown, 0 Unchecked, 11450.60ms Time] [2021-11-02 13:01:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-11-02 13:01:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 759. [2021-11-02 13:01:26,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 740 states have (on average 1.1716216216216215) internal successors, (867), 758 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 867 transitions. [2021-11-02 13:01:26,110 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 867 transitions. Word has length 128 [2021-11-02 13:01:26,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:26,110 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 867 transitions. [2021-11-02 13:01:26,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 10 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:26,111 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 867 transitions. [2021-11-02 13:01:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 13:01:26,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:26,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:26,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 13:01:26,112 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:01:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:26,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1466486195, now seen corresponding path program 1 times [2021-11-02 13:01:26,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:01:26,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628043089] [2021-11-02 13:01:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:26,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:01:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:32,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:01:32,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:01:32,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628043089] [2021-11-02 13:01:32,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628043089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:32,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:32,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 13:01:32,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133257647] [2021-11-02 13:01:32,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 13:01:32,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:01:32,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 13:01:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-02 13:01:32,127 INFO L87 Difference]: Start difference. First operand 759 states and 867 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:34,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:41,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:41,488 INFO L93 Difference]: Finished difference Result 1165 states and 1343 transitions. [2021-11-02 13:01:41,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:01:41,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-02 13:01:41,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:41,491 INFO L225 Difference]: With dead ends: 1165 [2021-11-02 13:01:41,491 INFO L226 Difference]: Without dead ends: 901 [2021-11-02 13:01:41,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 954.88ms TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:01:41,492 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1175 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 25 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7862.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.38ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8647.32ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:41,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 0 Invalid, 2022 Unknown, 0 Unchecked, 21.38ms Time], IncrementalHoareTripleChecker [25 Valid, 1996 Invalid, 1 Unknown, 0 Unchecked, 8647.32ms Time] [2021-11-02 13:01:41,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-11-02 13:01:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 704. [2021-11-02 13:01:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 685 states have (on average 1.178102189781022) internal successors, (807), 703 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 807 transitions. [2021-11-02 13:01:41,549 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 807 transitions. Word has length 131 [2021-11-02 13:01:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:41,549 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 807 transitions. [2021-11-02 13:01:41,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 10 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 807 transitions. [2021-11-02 13:01:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 13:01:41,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:41,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:41,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 13:01:41,551 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:01:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:41,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1360145407, now seen corresponding path program 1 times [2021-11-02 13:01:41,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:01:41,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913361760] [2021-11-02 13:01:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:41,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:01:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:01:41,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:01:41,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913361760] [2021-11-02 13:01:41,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913361760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:41,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:41,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:01:41,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108777504] [2021-11-02 13:01:41,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:01:41,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:01:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:01:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:01:41,947 INFO L87 Difference]: Start difference. First operand 704 states and 807 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:43,997 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:01:51,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:01:51,730 INFO L93 Difference]: Finished difference Result 1440 states and 1666 transitions. [2021-11-02 13:01:51,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:01:51,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-02 13:01:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:01:51,734 INFO L225 Difference]: With dead ends: 1440 [2021-11-02 13:01:51,734 INFO L226 Difference]: Without dead ends: 1086 [2021-11-02 13:01:51,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 595.87ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:01:51,735 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 368 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8506.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.95ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9219.82ms IncrementalHoareTripleChecker+Time [2021-11-02 13:01:51,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 0 Invalid, 2102 Unknown, 0 Unchecked, 18.95ms Time], IncrementalHoareTripleChecker [26 Valid, 2075 Invalid, 1 Unknown, 0 Unchecked, 9219.82ms Time] [2021-11-02 13:01:51,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-02 13:01:51,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 793. [2021-11-02 13:01:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 774 states have (on average 1.1614987080103358) internal successors, (899), 792 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:51,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 899 transitions. [2021-11-02 13:01:51,762 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 899 transitions. Word has length 131 [2021-11-02 13:01:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:01:51,762 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 899 transitions. [2021-11-02 13:01:51,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:51,763 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 899 transitions. [2021-11-02 13:01:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 13:01:51,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:01:51,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:01:51,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-02 13:01:51,764 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:01:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:01:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash -103304323, now seen corresponding path program 1 times [2021-11-02 13:01:51,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:01:51,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663569822] [2021-11-02 13:01:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:01:51,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:01:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:01:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:01:56,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:01:56,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663569822] [2021-11-02 13:01:56,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663569822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:01:56,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:01:56,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-02 13:01:56,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868446030] [2021-11-02 13:01:56,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 13:01:56,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:01:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 13:01:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-02 13:01:56,196 INFO L87 Difference]: Start difference. First operand 793 states and 899 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:01:58,252 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:05,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:05,862 INFO L93 Difference]: Finished difference Result 1807 states and 2059 transitions. [2021-11-02 13:03:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-02 13:03:05,863 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-02 13:03:05,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:05,866 INFO L225 Difference]: With dead ends: 1807 [2021-11-02 13:03:05,866 INFO L226 Difference]: Without dead ends: 1615 [2021-11-02 13:03:05,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5654 ImplicationChecksByTransitivity, 40965.63ms TimeCoverageRelationStatistics Valid=2371, Invalid=14141, Unknown=0, NotChecked=0, Total=16512 [2021-11-02 13:03:05,870 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5806 mSDsluCounter, 4343 mSDsCounter, 0 mSdLazyCounter, 7390 mSolverCounterSat, 334 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29006.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5806 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 7725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 101.88ms SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 7390 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30811.76ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:05,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5806 Valid, 0 Invalid, 7725 Unknown, 0 Unchecked, 101.88ms Time], IncrementalHoareTripleChecker [334 Valid, 7390 Invalid, 1 Unknown, 0 Unchecked, 30811.76ms Time] [2021-11-02 13:03:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2021-11-02 13:03:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 838. [2021-11-02 13:03:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 819 states have (on average 1.1575091575091576) internal successors, (948), 837 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:05,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 948 transitions. [2021-11-02 13:03:05,906 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 948 transitions. Word has length 131 [2021-11-02 13:03:05,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:05,906 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 948 transitions. [2021-11-02 13:03:05,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:05,907 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 948 transitions. [2021-11-02 13:03:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 13:03:05,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:05,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:03:05,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 13:03:05,908 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:03:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 576754047, now seen corresponding path program 1 times [2021-11-02 13:03:05,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:03:05,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142219805] [2021-11-02 13:03:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:05,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:03:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:03:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:03:10,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:03:10,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142219805] [2021-11-02 13:03:10,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142219805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:03:10,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:03:10,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 13:03:10,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399061878] [2021-11-02 13:03:10,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 13:03:10,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:03:10,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 13:03:10,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:03:10,563 INFO L87 Difference]: Start difference. First operand 838 states and 948 transitions. Second operand has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:12,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:03:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:03:55,919 INFO L93 Difference]: Finished difference Result 1852 states and 2111 transitions. [2021-11-02 13:03:55,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 13:03:55,919 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-02 13:03:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:03:55,923 INFO L225 Difference]: With dead ends: 1852 [2021-11-02 13:03:55,923 INFO L226 Difference]: Without dead ends: 1598 [2021-11-02 13:03:55,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1633 ImplicationChecksByTransitivity, 20410.19ms TimeCoverageRelationStatistics Valid=1038, Invalid=4814, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 13:03:55,925 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3566 mSDsluCounter, 3698 mSDsCounter, 0 mSdLazyCounter, 6529 mSolverCounterSat, 257 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24930.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 84.86ms SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 6529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26592.28ms IncrementalHoareTripleChecker+Time [2021-11-02 13:03:55,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3566 Valid, 0 Invalid, 6787 Unknown, 0 Unchecked, 84.86ms Time], IncrementalHoareTripleChecker [257 Valid, 6529 Invalid, 1 Unknown, 0 Unchecked, 26592.28ms Time] [2021-11-02 13:03:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-11-02 13:03:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 918. [2021-11-02 13:03:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 899 states have (on average 1.1479421579532814) internal successors, (1032), 917 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:55,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1032 transitions. [2021-11-02 13:03:55,970 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1032 transitions. Word has length 131 [2021-11-02 13:03:55,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:03:55,970 INFO L470 AbstractCegarLoop]: Abstraction has 918 states and 1032 transitions. [2021-11-02 13:03:55,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.24) internal successors, (131), 25 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:03:55,971 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1032 transitions. [2021-11-02 13:03:55,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-02 13:03:55,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:03:55,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:03:55,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-02 13:03:55,973 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:03:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:03:55,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1691652225, now seen corresponding path program 1 times [2021-11-02 13:03:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:03:55,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476998558] [2021-11-02 13:03:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:03:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:03:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:00,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:00,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476998558] [2021-11-02 13:04:00,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476998558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:00,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:00,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-02 13:04:00,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327742275] [2021-11-02 13:04:00,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 13:04:00,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:00,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 13:04:00,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-02 13:04:00,216 INFO L87 Difference]: Start difference. First operand 918 states and 1032 transitions. Second operand has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:02,970 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 [] [2021-11-02 13:04:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:14,075 INFO L93 Difference]: Finished difference Result 1294 states and 1455 transitions. [2021-11-02 13:04:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 13:04:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2021-11-02 13:04:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:14,077 INFO L225 Difference]: With dead ends: 1294 [2021-11-02 13:04:14,077 INFO L226 Difference]: Without dead ends: 911 [2021-11-02 13:04:14,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 3074.29ms TimeCoverageRelationStatistics Valid=452, Invalid=1188, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 13:04:14,078 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1461 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 90 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10573.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.18ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11383.67ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:14,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 0 Invalid, 2765 Unknown, 0 Unchecked, 26.18ms Time], IncrementalHoareTripleChecker [90 Valid, 2674 Invalid, 1 Unknown, 0 Unchecked, 11383.67ms Time] [2021-11-02 13:04:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2021-11-02 13:04:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 760. [2021-11-02 13:04:14,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 741 states have (on average 1.164642375168691) internal successors, (863), 759 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 863 transitions. [2021-11-02 13:04:14,103 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 863 transitions. Word has length 131 [2021-11-02 13:04:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:14,104 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 863 transitions. [2021-11-02 13:04:14,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.733333333333333) internal successors, (131), 15 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 863 transitions. [2021-11-02 13:04:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:04:14,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:14,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:14,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-02 13:04:14,105 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:04:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1639228634, now seen corresponding path program 1 times [2021-11-02 13:04:14,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:14,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877424181] [2021-11-02 13:04:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:14,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:14,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:14,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877424181] [2021-11-02 13:04:14,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877424181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:14,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:14,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 13:04:14,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977002435] [2021-11-02 13:04:14,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 13:04:14,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 13:04:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-02 13:04:14,702 INFO L87 Difference]: Start difference. First operand 760 states and 863 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:17,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:26,696 INFO L93 Difference]: Finished difference Result 1741 states and 2053 transitions. [2021-11-02 13:04:26,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 13:04:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:04:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:26,700 INFO L225 Difference]: With dead ends: 1741 [2021-11-02 13:04:26,700 INFO L226 Difference]: Without dead ends: 1417 [2021-11-02 13:04:26,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 775.92ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-02 13:04:26,701 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 963 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 48 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10483.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.99ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11290.71ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:26,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 0 Invalid, 2200 Unknown, 0 Unchecked, 22.99ms Time], IncrementalHoareTripleChecker [48 Valid, 2151 Invalid, 1 Unknown, 0 Unchecked, 11290.71ms Time] [2021-11-02 13:04:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2021-11-02 13:04:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 814. [2021-11-02 13:04:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 795 states have (on average 1.1559748427672956) internal successors, (919), 813 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 919 transitions. [2021-11-02 13:04:26,742 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 919 transitions. Word has length 134 [2021-11-02 13:04:26,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:26,742 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 919 transitions. [2021-11-02 13:04:26,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 919 transitions. [2021-11-02 13:04:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:04:26,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:26,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:26,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-02 13:04:26,744 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:04:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:26,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1067390760, now seen corresponding path program 1 times [2021-11-02 13:04:26,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:26,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72153987] [2021-11-02 13:04:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:26,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:30,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:30,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72153987] [2021-11-02 13:04:30,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72153987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:30,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:30,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-02 13:04:30,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41546253] [2021-11-02 13:04:30,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 13:04:30,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:30,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 13:04:30,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:04:30,683 INFO L87 Difference]: Start difference. First operand 814 states and 919 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:34,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:49,402 INFO L93 Difference]: Finished difference Result 1681 states and 1964 transitions. [2021-11-02 13:04:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 13:04:49,402 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:04:49,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:49,405 INFO L225 Difference]: With dead ends: 1681 [2021-11-02 13:04:49,405 INFO L226 Difference]: Without dead ends: 1455 [2021-11-02 13:04:49,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2081.44ms TimeCoverageRelationStatistics Valid=217, Invalid=595, Unknown=0, NotChecked=0, Total=812 [2021-11-02 13:04:49,406 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1522 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 4010 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15993.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.04ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 4010 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17086.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:49,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 0 Invalid, 4077 Unknown, 0 Unchecked, 46.04ms Time], IncrementalHoareTripleChecker [66 Valid, 4010 Invalid, 1 Unknown, 0 Unchecked, 17086.12ms Time] [2021-11-02 13:04:49,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-11-02 13:04:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 805. [2021-11-02 13:04:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 786 states have (on average 1.1577608142493638) internal successors, (910), 804 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:49,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 910 transitions. [2021-11-02 13:04:49,438 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 910 transitions. Word has length 134 [2021-11-02 13:04:49,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:49,438 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 910 transitions. [2021-11-02 13:04:49,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:49,438 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 910 transitions. [2021-11-02 13:04:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:04:49,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:49,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:49,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-02 13:04:49,440 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:04:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash -396058970, now seen corresponding path program 1 times [2021-11-02 13:04:49,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:49,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508774672] [2021-11-02 13:04:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:49,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:49,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:49,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508774672] [2021-11-02 13:04:49,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508774672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:49,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:49,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:04:49,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421635420] [2021-11-02 13:04:49,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:04:49,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:04:49,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:04:49,778 INFO L87 Difference]: Start difference. First operand 805 states and 910 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:51,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:04:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:04:58,567 INFO L93 Difference]: Finished difference Result 1419 states and 1643 transitions. [2021-11-02 13:04:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:04:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:04:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:04:58,569 INFO L225 Difference]: With dead ends: 1419 [2021-11-02 13:04:58,569 INFO L226 Difference]: Without dead ends: 1075 [2021-11-02 13:04:58,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 315.38ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-02 13:04:58,570 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 359 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7903.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.99ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8463.33ms IncrementalHoareTripleChecker+Time [2021-11-02 13:04:58,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 0 Invalid, 2093 Unknown, 0 Unchecked, 13.99ms Time], IncrementalHoareTripleChecker [22 Valid, 2070 Invalid, 1 Unknown, 0 Unchecked, 8463.33ms Time] [2021-11-02 13:04:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2021-11-02 13:04:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 788. [2021-11-02 13:04:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 769 states have (on average 1.1560468140442133) internal successors, (889), 787 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 889 transitions. [2021-11-02 13:04:58,607 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 889 transitions. Word has length 134 [2021-11-02 13:04:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:04:58,608 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 889 transitions. [2021-11-02 13:04:58,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:04:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 889 transitions. [2021-11-02 13:04:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:04:58,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:04:58,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:04:58,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-02 13:04:58,610 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:04:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:04:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash 606350820, now seen corresponding path program 1 times [2021-11-02 13:04:58,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:04:58,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096543410] [2021-11-02 13:04:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:04:58,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:04:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:04:59,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:04:59,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:04:59,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096543410] [2021-11-02 13:04:59,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096543410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:04:59,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:04:59,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 13:04:59,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829277727] [2021-11-02 13:04:59,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 13:04:59,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:04:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 13:04:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:04:59,009 INFO L87 Difference]: Start difference. First operand 788 states and 889 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:01,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:05:08,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:08,078 INFO L93 Difference]: Finished difference Result 1317 states and 1483 transitions. [2021-11-02 13:05:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 13:05:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:05:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:08,080 INFO L225 Difference]: With dead ends: 1317 [2021-11-02 13:05:08,080 INFO L226 Difference]: Without dead ends: 985 [2021-11-02 13:05:08,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 363.65ms TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-02 13:05:08,081 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 272 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8091.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.83ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8769.23ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:08,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 0 Invalid, 1888 Unknown, 0 Unchecked, 12.83ms Time], IncrementalHoareTripleChecker [20 Valid, 1867 Invalid, 1 Unknown, 0 Unchecked, 8769.23ms Time] [2021-11-02 13:05:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2021-11-02 13:05:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 833. [2021-11-02 13:05:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 814 states have (on average 1.1486486486486487) internal successors, (935), 832 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 935 transitions. [2021-11-02 13:05:08,110 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 935 transitions. Word has length 134 [2021-11-02 13:05:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 935 transitions. [2021-11-02 13:05:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 935 transitions. [2021-11-02 13:05:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:05:08,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:08,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:08,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-02 13:05:08,111 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:05:08,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2121858526, now seen corresponding path program 1 times [2021-11-02 13:05:08,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:08,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512793229] [2021-11-02 13:05:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:08,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:05:13,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:13,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512793229] [2021-11-02 13:05:13,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512793229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:13,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:13,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-02 13:05:13,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858904686] [2021-11-02 13:05:13,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 13:05:13,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 13:05:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-02 13:05:13,339 INFO L87 Difference]: Start difference. First operand 833 states and 935 transitions. Second operand has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:15,952 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:05:39,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:05:39,530 INFO L93 Difference]: Finished difference Result 1432 states and 1590 transitions. [2021-11-02 13:05:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 13:05:39,531 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:05:39,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:05:39,533 INFO L225 Difference]: With dead ends: 1432 [2021-11-02 13:05:39,533 INFO L226 Difference]: Without dead ends: 1212 [2021-11-02 13:05:39,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 6857.23ms TimeCoverageRelationStatistics Valid=625, Invalid=2915, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 13:05:39,535 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2307 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 5795 mSolverCounterSat, 165 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19008.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.44ms SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 5795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20241.11ms IncrementalHoareTripleChecker+Time [2021-11-02 13:05:39,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2307 Valid, 0 Invalid, 5961 Unknown, 0 Unchecked, 55.44ms Time], IncrementalHoareTripleChecker [165 Valid, 5795 Invalid, 1 Unknown, 0 Unchecked, 20241.11ms Time] [2021-11-02 13:05:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2021-11-02 13:05:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 929. [2021-11-02 13:05:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 910 states have (on average 1.1538461538461537) internal successors, (1050), 928 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1050 transitions. [2021-11-02 13:05:39,581 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1050 transitions. Word has length 134 [2021-11-02 13:05:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:05:39,582 INFO L470 AbstractCegarLoop]: Abstraction has 929 states and 1050 transitions. [2021-11-02 13:05:39,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.7) internal successors, (134), 20 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1050 transitions. [2021-11-02 13:05:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:05:39,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:05:39,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:05:39,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-02 13:05:39,584 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:05:39,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:05:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash 526931114, now seen corresponding path program 1 times [2021-11-02 13:05:39,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:05:39,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131773583] [2021-11-02 13:05:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:05:39,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:05:39,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:05:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:05:42,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:05:42,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131773583] [2021-11-02 13:05:42,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131773583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:05:42,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:05:42,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-02 13:05:42,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418102915] [2021-11-02 13:05:42,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 13:05:42,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:05:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 13:05:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-02 13:05:42,326 INFO L87 Difference]: Start difference. First operand 929 states and 1050 transitions. Second operand has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:05:45,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:06:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:06:22,721 INFO L93 Difference]: Finished difference Result 1732 states and 1967 transitions. [2021-11-02 13:06:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-02 13:06:22,722 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2021-11-02 13:06:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:06:22,724 INFO L225 Difference]: With dead ends: 1732 [2021-11-02 13:06:22,724 INFO L226 Difference]: Without dead ends: 1526 [2021-11-02 13:06:22,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1130 ImplicationChecksByTransitivity, 10366.57ms TimeCoverageRelationStatistics Valid=749, Invalid=3673, Unknown=0, NotChecked=0, Total=4422 [2021-11-02 13:06:22,725 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 2837 mSDsluCounter, 5386 mSDsCounter, 0 mSdLazyCounter, 8276 mSolverCounterSat, 179 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29239.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 8456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 104.28ms SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 8276 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31091.56ms IncrementalHoareTripleChecker+Time [2021-11-02 13:06:22,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 0 Invalid, 8456 Unknown, 0 Unchecked, 104.28ms Time], IncrementalHoareTripleChecker [179 Valid, 8276 Invalid, 1 Unknown, 0 Unchecked, 31091.56ms Time] [2021-11-02 13:06:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2021-11-02 13:06:22,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 976. [2021-11-02 13:06:22,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 957 states have (on average 1.1494252873563218) internal successors, (1100), 975 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1100 transitions. [2021-11-02 13:06:22,772 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1100 transitions. Word has length 134 [2021-11-02 13:06:22,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:06:22,772 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1100 transitions. [2021-11-02 13:06:22,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1100 transitions. [2021-11-02 13:06:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 13:06:22,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:06:22,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 13:06:22,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-02 13:06:22,774 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 13:06:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:06:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1061416788, now seen corresponding path program 1 times [2021-11-02 13:06:22,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:06:22,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205103446] [2021-11-02 13:06:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:06:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:06:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:06:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:06:28,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:06:28,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205103446] [2021-11-02 13:06:28,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205103446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:06:28,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:06:28,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-11-02 13:06:28,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613669719] [2021-11-02 13:06:28,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 13:06:28,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:06:28,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 13:06:28,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-11-02 13:06:28,674 INFO L87 Difference]: Start difference. First operand 976 states and 1100 transitions. Second operand has 25 states, 25 states have (on average 5.36) internal successors, (134), 25 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 13:06:32,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15