./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 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_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-5f08f0f [2021-11-05 12:29:09,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:29:09,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:29:09,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:29:09,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:29:09,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:29:09,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:29:09,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:29:09,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:29:09,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:29:09,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:29:09,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:29:09,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:29:09,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:29:09,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:29:09,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:29:09,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:29:09,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:29:09,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:29:09,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:29:09,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:29:09,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:29:09,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:29:09,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:29:09,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:29:09,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:29:09,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:29:09,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:29:09,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:29:09,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:29:09,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:29:09,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:29:09,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:29:09,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:29:09,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:29:09,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:29:09,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:29:09,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:29:09,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:29:09,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:29:09,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:29:09,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:29:09,675 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:29:09,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:29:09,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:29:09,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:29:09,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:29:09,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:29:09,678 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:29:09,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:29:09,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:29:09,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:29:09,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:29:09,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:29:09,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:29:09,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:29:09,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:29:09,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:29:09,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:29:09,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:29:09,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:29:09,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:29:09,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:29:09,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:29:09,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:29:09,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:29:09,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:29:09,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:29:09,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:29:09,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:29:09,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:29:09,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-11-05 12:29:09,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:29:09,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:29:09,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:29:09,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:29:09,984 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:29:09,986 INFO L432 ainManager$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 [2021-11-05 12:29:10,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7043eef8/b22cb42d4de54f9f8329f112362c2616/FLAG1a036ee51 [2021-11-05 12:29:10,675 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:29:10,676 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 [2021-11-05 12:29:10,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7043eef8/b22cb42d4de54f9f8329f112362c2616/FLAG1a036ee51 [2021-11-05 12:29:11,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7043eef8/b22cb42d4de54f9f8329f112362c2616 [2021-11-05 12:29:11,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:29:11,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:29:11,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:29:11,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:29:11,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:29:11,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:29:11" (1/1) ... [2021-11-05 12:29:11,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c304eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:11, skipping insertion in model container [2021-11-05 12:29:11,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:29:11" (1/1) ... [2021-11-05 12:29:11,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:29:11,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:29:11,365 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] [2021-11-05 12:29:11,370 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] [2021-11-05 12:29:11,389 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:29:11,394 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:29:11,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,850 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,861 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,862 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:11,863 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,103 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:29:12,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:29:12,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:29:12,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:29:12,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:29:12,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:29:12,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:29:12,107 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:29:12,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:29:12,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:29:12,201 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:29:12,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,270 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:29:12,369 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:29:12,391 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] [2021-11-05 12:29:12,393 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] [2021-11-05 12:29:12,396 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:29:12,397 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:29:12,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,445 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,457 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,459 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:29:12,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:29:12,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:29:12,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:29:12,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:29:12,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:29:12,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:29:12,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:29:12,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:29:12,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:29:12,538 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:29:12,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,597 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:29:12,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:29:12,849 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:29:12,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12 WrapperNode [2021-11-05 12:29:12,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:29:12,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:29:12,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:29:12,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:29:12,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:12,966 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:29:13,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:29:13,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:29:13,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:29:13,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:29:13,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:29:13,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:29:13,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:29:13,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (1/1) ... [2021-11-05 12:29:13,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:29:13,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:29:13,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-05 12:29:13,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-05 12:29:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:29:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:29:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:29:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:29:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:29:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:29:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:29:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:29:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:29:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:29:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:29:21,485 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:29:21,485 INFO L299 CfgBuilder]: Removed 151 assume(true) statements. [2021-11-05 12:29:21,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:29:21 BoogieIcfgContainer [2021-11-05 12:29:21,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:29:21,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:29:21,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:29:21,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:29:21,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:29:11" (1/3) ... [2021-11-05 12:29:21,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c522e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:29:21, skipping insertion in model container [2021-11-05 12:29:21,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:29:12" (2/3) ... [2021-11-05 12:29:21,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209c522e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:29:21, skipping insertion in model container [2021-11-05 12:29:21,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:29:21" (3/3) ... [2021-11-05 12:29:21,493 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-11-05 12:29:21,496 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:29:21,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-05 12:29:21,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:29:21,537 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-05 12:29:21,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-05 12:29:21,551 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) [2021-11-05 12:29:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:29:21,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:21,562 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] [2021-11-05 12:29:21,563 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)] === [2021-11-05 12:29:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:21,570 INFO L85 PathProgramCache]: Analyzing trace with hash 28296255, now seen corresponding path program 1 times [2021-11-05 12:29:21,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:21,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180235794] [2021-11-05 12:29:21,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:21,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:22,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:22,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180235794] [2021-11-05 12:29:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180235794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:22,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:22,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:29:22,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312333330] [2021-11-05 12:29:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:22,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:29:22,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:29:22,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:29:22,238 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) [2021-11-05 12:29:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:22,282 INFO L93 Difference]: Finished difference Result 586 states and 815 transitions. [2021-11-05 12:29:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:29:22,285 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 [2021-11-05 12:29:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:22,292 INFO L225 Difference]: With dead ends: 586 [2021-11-05 12:29:22,292 INFO L226 Difference]: Without dead ends: 290 [2021-11-05 12:29:22,295 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 [2021-11-05 12:29:22,298 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:22,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:29:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-05 12:29:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-05 12:29:22,347 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) [2021-11-05 12:29:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 366 transitions. [2021-11-05 12:29:22,358 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 366 transitions. Word has length 64 [2021-11-05 12:29:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:22,359 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 366 transitions. [2021-11-05 12:29:22,360 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) [2021-11-05 12:29:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 366 transitions. [2021-11-05 12:29:22,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:29:22,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:22,366 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] [2021-11-05 12:29:22,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:29:22,367 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)] === [2021-11-05 12:29:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1015264321, now seen corresponding path program 1 times [2021-11-05 12:29:22,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:22,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671640546] [2021-11-05 12:29:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:22,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:22,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:22,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671640546] [2021-11-05 12:29:22,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671640546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:22,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:22,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:29:22,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033803970] [2021-11-05 12:29:22,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:22,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:29:22,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:29:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:22,726 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) [2021-11-05 12:29:23,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:23,009 INFO L93 Difference]: Finished difference Result 550 states and 694 transitions. [2021-11-05 12:29:23,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:29:23,010 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 [2021-11-05 12:29:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:23,012 INFO L225 Difference]: With dead ends: 550 [2021-11-05 12:29:23,012 INFO L226 Difference]: Without dead ends: 290 [2021-11-05 12:29:23,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.94ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:23,014 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 504 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.26ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:23,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 502 Invalid, 69 Unknown, 0 Unchecked, 5.26ms Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 254.67ms Time] [2021-11-05 12:29:23,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-05 12:29:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-05 12:29:23,035 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) [2021-11-05 12:29:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-05 12:29:23,036 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 64 [2021-11-05 12:29:23,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:23,037 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-05 12:29:23,037 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) [2021-11-05 12:29:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-05 12:29:23,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:29:23,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:23,038 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] [2021-11-05 12:29:23,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 12:29:23,039 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)] === [2021-11-05 12:29:23,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:23,039 INFO L85 PathProgramCache]: Analyzing trace with hash -2079484297, now seen corresponding path program 1 times [2021-11-05 12:29:23,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:23,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21671397] [2021-11-05 12:29:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:23,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:23,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:23,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21671397] [2021-11-05 12:29:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21671397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:23,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:23,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:29:23,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138767720] [2021-11-05 12:29:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:23,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:29:23,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:23,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:29:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:23,282 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) [2021-11-05 12:29:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:23,965 INFO L93 Difference]: Finished difference Result 757 states and 981 transitions. [2021-11-05 12:29:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:29:23,966 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 [2021-11-05 12:29:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:23,968 INFO L225 Difference]: With dead ends: 757 [2021-11-05 12:29:23,968 INFO L226 Difference]: Without dead ends: 488 [2021-11-05 12:29:23,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:29:23,970 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 280 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 554.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 629.37ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:23,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 1240 Invalid, 196 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [33 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 629.37ms Time] [2021-11-05 12:29:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-05 12:29:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 308. [2021-11-05 12:29:23,979 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) [2021-11-05 12:29:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 381 transitions. [2021-11-05 12:29:23,980 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 381 transitions. Word has length 76 [2021-11-05 12:29:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:23,980 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 381 transitions. [2021-11-05 12:29:23,981 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) [2021-11-05 12:29:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 381 transitions. [2021-11-05 12:29:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:29:23,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:23,982 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] [2021-11-05 12:29:23,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 12:29:23,983 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)] === [2021-11-05 12:29:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -818567047, now seen corresponding path program 1 times [2021-11-05 12:29:23,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:23,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332381720] [2021-11-05 12:29:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:23,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:24,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:24,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332381720] [2021-11-05 12:29:24,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332381720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:24,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:24,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:29:24,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759885522] [2021-11-05 12:29:24,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:24,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:29:24,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:29:24,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:24,168 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) [2021-11-05 12:29:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:24,735 INFO L93 Difference]: Finished difference Result 675 states and 850 transitions. [2021-11-05 12:29:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:29:24,736 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 [2021-11-05 12:29:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:24,737 INFO L225 Difference]: With dead ends: 675 [2021-11-05 12:29:24,737 INFO L226 Difference]: Without dead ends: 398 [2021-11-05 12:29:24,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.64ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:29:24,739 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 207 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 447.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 518.02ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:24,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 966 Invalid, 183 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [33 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 518.02ms Time] [2021-11-05 12:29:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-05 12:29:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 326. [2021-11-05 12:29:24,745 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) [2021-11-05 12:29:24,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 399 transitions. [2021-11-05 12:29:24,746 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 399 transitions. Word has length 76 [2021-11-05 12:29:24,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:24,746 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 399 transitions. [2021-11-05 12:29:24,746 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) [2021-11-05 12:29:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 399 transitions. [2021-11-05 12:29:24,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:29:24,747 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:24,748 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] [2021-11-05 12:29:24,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:29:24,748 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)] === [2021-11-05 12:29:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1654783221, now seen corresponding path program 1 times [2021-11-05 12:29:24,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:24,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947247731] [2021-11-05 12:29:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:24,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:24,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:24,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947247731] [2021-11-05 12:29:24,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947247731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:24,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:24,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:29:24,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610353915] [2021-11-05 12:29:24,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:25,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:29:25,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:29:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:25,000 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) [2021-11-05 12:29:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:25,225 INFO L93 Difference]: Finished difference Result 586 states and 717 transitions. [2021-11-05 12:29:25,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:29:25,225 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 [2021-11-05 12:29:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:25,227 INFO L225 Difference]: With dead ends: 586 [2021-11-05 12:29:25,227 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 12:29:25,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:29:25,228 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 480 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 187.80ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:25,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 508 Invalid, 62 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 187.80ms Time] [2021-11-05 12:29:25,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 12:29:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-05 12:29:25,233 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) [2021-11-05 12:29:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 397 transitions. [2021-11-05 12:29:25,234 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 397 transitions. Word has length 76 [2021-11-05 12:29:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:25,234 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 397 transitions. [2021-11-05 12:29:25,234 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) [2021-11-05 12:29:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 397 transitions. [2021-11-05 12:29:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-05 12:29:25,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:25,236 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] [2021-11-05 12:29:25,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:29:25,236 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)] === [2021-11-05 12:29:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:25,237 INFO L85 PathProgramCache]: Analyzing trace with hash 865605514, now seen corresponding path program 1 times [2021-11-05 12:29:25,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:25,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253733841] [2021-11-05 12:29:25,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:25,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:25,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:25,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253733841] [2021-11-05 12:29:25,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253733841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:25,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:25,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:29:25,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651211744] [2021-11-05 12:29:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:25,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:29:25,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:29:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:29:25,593 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) [2021-11-05 12:29:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:25,962 INFO L93 Difference]: Finished difference Result 513 states and 619 transitions. [2021-11-05 12:29:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:29:25,963 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 [2021-11-05 12:29:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:25,965 INFO L225 Difference]: With dead ends: 513 [2021-11-05 12:29:25,965 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 12:29:25,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 237.26ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:29:25,966 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1115 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.99ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:25,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1115 Valid, 581 Invalid, 74 Unknown, 0 Unchecked, 2.99ms Time], IncrementalHoareTripleChecker [11 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 218.89ms Time] [2021-11-05 12:29:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 12:29:25,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-05 12:29:25,971 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) [2021-11-05 12:29:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2021-11-05 12:29:25,972 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 82 [2021-11-05 12:29:25,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:25,972 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2021-11-05 12:29:25,972 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) [2021-11-05 12:29:25,972 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2021-11-05 12:29:25,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-05 12:29:25,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:25,973 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] [2021-11-05 12:29:25,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:29:25,973 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)] === [2021-11-05 12:29:25,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1668683435, now seen corresponding path program 1 times [2021-11-05 12:29:25,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:25,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762347567] [2021-11-05 12:29:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:25,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:26,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:26,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762347567] [2021-11-05 12:29:26,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762347567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:26,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:26,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:29:26,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562490805] [2021-11-05 12:29:26,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:26,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:29:26,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:29:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:29:26,360 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) [2021-11-05 12:29:26,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:26,877 INFO L93 Difference]: Finished difference Result 460 states and 548 transitions. [2021-11-05 12:29:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:29:26,878 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 [2021-11-05 12:29:26,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:26,879 INFO L225 Difference]: With dead ends: 460 [2021-11-05 12:29:26,879 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 12:29:26,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 372.36ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:29:26,880 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1320 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 253.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 272.55ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:26,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 694 Invalid, 90 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [12 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 272.55ms Time] [2021-11-05 12:29:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 12:29:26,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-05 12:29:26,885 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) [2021-11-05 12:29:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 394 transitions. [2021-11-05 12:29:26,886 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 394 transitions. Word has length 88 [2021-11-05 12:29:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:26,887 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 394 transitions. [2021-11-05 12:29:26,887 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) [2021-11-05 12:29:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 394 transitions. [2021-11-05 12:29:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-05 12:29:26,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:26,888 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] [2021-11-05 12:29:26,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:29:26,888 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)] === [2021-11-05 12:29:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195350, now seen corresponding path program 1 times [2021-11-05 12:29:26,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:26,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209122203] [2021-11-05 12:29:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:26,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:27,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:27,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209122203] [2021-11-05 12:29:27,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209122203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:27,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:27,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:29:27,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622345275] [2021-11-05 12:29:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:27,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:29:27,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:29:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:27,133 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) [2021-11-05 12:29:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:27,267 INFO L93 Difference]: Finished difference Result 534 states and 641 transitions. [2021-11-05 12:29:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:29:27,271 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 [2021-11-05 12:29:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:27,273 INFO L225 Difference]: With dead ends: 534 [2021-11-05 12:29:27,273 INFO L226 Difference]: Without dead ends: 326 [2021-11-05 12:29:27,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.91ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:29:27,273 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 129 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.29ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.22ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:27,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 806 Invalid, 40 Unknown, 0 Unchecked, 1.29ms Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 123.22ms Time] [2021-11-05 12:29:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-05 12:29:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-11-05 12:29:27,278 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) [2021-11-05 12:29:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-05 12:29:27,280 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 94 [2021-11-05 12:29:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:27,281 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-05 12:29:27,283 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) [2021-11-05 12:29:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-05 12:29:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 12:29:27,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:27,284 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] [2021-11-05 12:29:27,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:29:27,284 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)] === [2021-11-05 12:29:27,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1700306559, now seen corresponding path program 1 times [2021-11-05 12:29:27,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:27,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440533846] [2021-11-05 12:29:27,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:27,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:27,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:27,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440533846] [2021-11-05 12:29:27,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440533846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:27,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:27,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:29:27,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435486513] [2021-11-05 12:29:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:27,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:29:27,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:29:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:29:27,975 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) [2021-11-05 12:29:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:28,974 INFO L93 Difference]: Finished difference Result 536 states and 627 transitions. [2021-11-05 12:29:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 12:29:28,974 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 [2021-11-05 12:29:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:28,976 INFO L225 Difference]: With dead ends: 536 [2021-11-05 12:29:28,976 INFO L226 Difference]: Without dead ends: 528 [2021-11-05 12:29:28,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 233.25ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:29:28,977 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 383 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 771.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.21ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 828.84ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:28,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1362 Invalid, 319 Unknown, 0 Unchecked, 6.21ms Time], IncrementalHoareTripleChecker [66 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 828.84ms Time] [2021-11-05 12:29:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-05 12:29:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 342. [2021-11-05 12:29:28,983 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) [2021-11-05 12:29:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 409 transitions. [2021-11-05 12:29:28,984 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 409 transitions. Word has length 100 [2021-11-05 12:29:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:28,984 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 409 transitions. [2021-11-05 12:29:28,984 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) [2021-11-05 12:29:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 409 transitions. [2021-11-05 12:29:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 12:29:28,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:28,985 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] [2021-11-05 12:29:28,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 12:29:28,985 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)] === [2021-11-05 12:29:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash -989785033, now seen corresponding path program 1 times [2021-11-05 12:29:28,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:28,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006747129] [2021-11-05 12:29:28,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:28,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:30,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:30,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006747129] [2021-11-05 12:29:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006747129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:30,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:30,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:29:30,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275816009] [2021-11-05 12:29:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:30,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:29:30,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:29:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:29:30,560 INFO L87 Difference]: Start difference. First operand 342 states and 409 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) [2021-11-05 12:29:32,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:34,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:36,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:38,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:41,012 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:43,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:51,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:51,524 INFO L93 Difference]: Finished difference Result 1166 states and 1416 transitions. [2021-11-05 12:29:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 12:29:51,525 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 [2021-11-05 12:29:51,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:51,528 INFO L225 Difference]: With dead ends: 1166 [2021-11-05 12:29:51,528 INFO L226 Difference]: Without dead ends: 970 [2021-11-05 12:29:51,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3203.54ms TimeCoverageRelationStatistics Valid=241, Invalid=881, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:29:51,529 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1366 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 88 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17120.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.38ms SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18076.25ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:51,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 3361 Invalid, 1853 Unknown, 0 Unchecked, 22.38ms Time], IncrementalHoareTripleChecker [88 Valid, 1759 Invalid, 6 Unknown, 0 Unchecked, 18076.25ms Time] [2021-11-05 12:29:51,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-05 12:29:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 374. [2021-11-05 12:29:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 355 states have (on average 1.267605633802817) internal successors, (450), 373 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 450 transitions. [2021-11-05 12:29:51,543 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 450 transitions. Word has length 104 [2021-11-05 12:29:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:51,544 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 450 transitions. [2021-11-05 12:29:51,544 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) [2021-11-05 12:29:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 450 transitions. [2021-11-05 12:29:51,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 12:29:51,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:51,546 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] [2021-11-05 12:29:51,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 12:29:51,547 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)] === [2021-11-05 12:29:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash 90747777, now seen corresponding path program 1 times [2021-11-05 12:29:51,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:51,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543129483] [2021-11-05 12:29:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:51,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:29:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:29:52,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:29:52,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543129483] [2021-11-05 12:29:52,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543129483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:29:52,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:29:52,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:29:52,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703592872] [2021-11-05 12:29:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:29:52,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:29:52,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:29:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:29:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:29:52,539 INFO L87 Difference]: Start difference. First operand 374 states and 450 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2021-11-05 12:29:54,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:56,666 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:29:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:29:58,951 INFO L93 Difference]: Finished difference Result 911 states and 1093 transitions. [2021-11-05 12:29:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:29:58,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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 [2021-11-05 12:29:58,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:29:58,954 INFO L225 Difference]: With dead ends: 911 [2021-11-05 12:29:58,954 INFO L226 Difference]: Without dead ends: 632 [2021-11-05 12:29:58,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 709.31ms TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:29:58,955 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 634 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 36 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5596.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.87ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5891.99ms IncrementalHoareTripleChecker+Time [2021-11-05 12:29:58,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [634 Valid, 1564 Invalid, 588 Unknown, 0 Unchecked, 6.87ms Time], IncrementalHoareTripleChecker [36 Valid, 550 Invalid, 2 Unknown, 0 Unchecked, 5891.99ms Time] [2021-11-05 12:29:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-05 12:29:58,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 436. [2021-11-05 12:29:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 417 states have (on average 1.2685851318944845) internal successors, (529), 435 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:29:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 529 transitions. [2021-11-05 12:29:58,965 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 529 transitions. Word has length 108 [2021-11-05 12:29:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:29:58,965 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 529 transitions. [2021-11-05 12:29:58,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2021-11-05 12:29:58,965 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 529 transitions. [2021-11-05 12:29:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 12:29:58,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:29:58,966 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] [2021-11-05 12:29:58,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 12:29:58,967 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)] === [2021-11-05 12:29:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:29:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash -418725313, now seen corresponding path program 1 times [2021-11-05 12:29:58,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:29:58,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964701072] [2021-11-05 12:29:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:29:58,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:29:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:00,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:00,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:00,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964701072] [2021-11-05 12:30:00,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964701072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:00,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:00,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:30:00,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075978401] [2021-11-05 12:30:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:00,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:30:00,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:30:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:30:00,390 INFO L87 Difference]: Start difference. First operand 436 states and 529 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 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) [2021-11-05 12:30:02,434 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:04,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:06,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:08,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:10,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:12,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:15,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:24,510 INFO L93 Difference]: Finished difference Result 1256 states and 1522 transitions. [2021-11-05 12:30:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-05 12:30:24,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 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 [2021-11-05 12:30:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:24,513 INFO L225 Difference]: With dead ends: 1256 [2021-11-05 12:30:24,513 INFO L226 Difference]: Without dead ends: 1060 [2021-11-05 12:30:24,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3421.74ms TimeCoverageRelationStatistics Valid=244, Invalid=946, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:30:24,514 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 1348 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 80 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20000.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.84ms SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21089.15ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:24,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 4214 Invalid, 2182 Unknown, 0 Unchecked, 22.84ms Time], IncrementalHoareTripleChecker [80 Valid, 2095 Invalid, 7 Unknown, 0 Unchecked, 21089.15ms Time] [2021-11-05 12:30:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-11-05 12:30:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 440. [2021-11-05 12:30:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 421 states have (on average 1.2660332541567696) internal successors, (533), 439 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 533 transitions. [2021-11-05 12:30:24,524 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 533 transitions. Word has length 108 [2021-11-05 12:30:24,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:24,525 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 533 transitions. [2021-11-05 12:30:24,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 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) [2021-11-05 12:30:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 533 transitions. [2021-11-05 12:30:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-05 12:30:24,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:24,526 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] [2021-11-05 12:30:24,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:30:24,526 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)] === [2021-11-05 12:30:24,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash -413912913, now seen corresponding path program 1 times [2021-11-05 12:30:24,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:24,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673432327] [2021-11-05 12:30:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:24,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:26,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:26,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673432327] [2021-11-05 12:30:26,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673432327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:26,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:26,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:30:26,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869563143] [2021-11-05 12:30:26,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:26,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:30:26,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:26,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:30:26,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:30:26,080 INFO L87 Difference]: Start difference. First operand 440 states and 533 transitions. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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) [2021-11-05 12:30:28,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:30,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:32,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:34,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:36,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:38,678 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 [] [2021-11-05 12:30:49,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:49,421 INFO L93 Difference]: Finished difference Result 1804 states and 2149 transitions. [2021-11-05 12:30:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-05 12:30:49,422 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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 [2021-11-05 12:30:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:49,426 INFO L225 Difference]: With dead ends: 1804 [2021-11-05 12:30:49,426 INFO L226 Difference]: Without dead ends: 1608 [2021-11-05 12:30:49,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 6204.47ms TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-05 12:30:49,428 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 4554 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 125 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16662.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4554 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.47ms SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17607.10ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:49,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4554 Valid, 3818 Invalid, 1664 Unknown, 0 Unchecked, 25.47ms Time], IncrementalHoareTripleChecker [125 Valid, 1533 Invalid, 6 Unknown, 0 Unchecked, 17607.10ms Time] [2021-11-05 12:30:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-11-05 12:30:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 508. [2021-11-05 12:30:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 489 states have (on average 1.2678936605316973) internal successors, (620), 507 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 620 transitions. [2021-11-05 12:30:49,442 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 620 transitions. Word has length 108 [2021-11-05 12:30:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:49,442 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 620 transitions. [2021-11-05 12:30:49,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 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) [2021-11-05 12:30:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 620 transitions. [2021-11-05 12:30:49,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-05 12:30:49,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:49,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:49,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 12:30:49,444 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)] === [2021-11-05 12:30:49,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:49,444 INFO L85 PathProgramCache]: Analyzing trace with hash 48063649, now seen corresponding path program 1 times [2021-11-05 12:30:49,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:49,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357360092] [2021-11-05 12:30:49,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:49,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:50,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:50,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357360092] [2021-11-05 12:30:50,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357360092] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:50,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:50,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:30:50,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709205061] [2021-11-05 12:30:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:50,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:30:50,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:30:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:30:50,214 INFO L87 Difference]: Start difference. First operand 508 states and 620 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:51,356 INFO L93 Difference]: Finished difference Result 1152 states and 1375 transitions. [2021-11-05 12:30:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:30:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-05 12:30:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:51,358 INFO L225 Difference]: With dead ends: 1152 [2021-11-05 12:30:51,358 INFO L226 Difference]: Without dead ends: 616 [2021-11-05 12:30:51,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 231.17ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:30:51,359 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 195 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 937.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 997.49ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:51,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 2255 Invalid, 419 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [58 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 997.49ms Time] [2021-11-05 12:30:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-11-05 12:30:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 457. [2021-11-05 12:30:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 438 states have (on average 1.2488584474885844) internal successors, (547), 456 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 547 transitions. [2021-11-05 12:30:51,372 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 547 transitions. Word has length 111 [2021-11-05 12:30:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:51,372 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 547 transitions. [2021-11-05 12:30:51,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 547 transitions. [2021-11-05 12:30:51,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:30:51,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:51,373 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] [2021-11-05 12:30:51,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 12:30:51,373 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)] === [2021-11-05 12:30:51,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:51,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1701466108, now seen corresponding path program 1 times [2021-11-05 12:30:51,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:51,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700453288] [2021-11-05 12:30:51,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:51,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:51,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:51,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700453288] [2021-11-05 12:30:51,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700453288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:51,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:51,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:30:51,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618837817] [2021-11-05 12:30:51,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:51,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:30:51,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:51,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:30:51,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:30:51,601 INFO L87 Difference]: Start difference. First operand 457 states and 547 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2021-11-05 12:30:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:52,062 INFO L93 Difference]: Finished difference Result 938 states and 1117 transitions. [2021-11-05 12:30:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:30:52,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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 [2021-11-05 12:30:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:52,064 INFO L225 Difference]: With dead ends: 938 [2021-11-05 12:30:52,064 INFO L226 Difference]: Without dead ends: 489 [2021-11-05 12:30:52,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 48.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:30:52,073 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 29 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 389.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 418.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:52,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 955 Invalid, 168 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [28 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 418.34ms Time] [2021-11-05 12:30:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-05 12:30:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 465. [2021-11-05 12:30:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 446 states have (on average 1.2197309417040358) internal successors, (544), 464 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) [2021-11-05 12:30:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 544 transitions. [2021-11-05 12:30:52,085 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 544 transitions. Word has length 113 [2021-11-05 12:30:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:52,085 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 544 transitions. [2021-11-05 12:30:52,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2021-11-05 12:30:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 544 transitions. [2021-11-05 12:30:52,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:30:52,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:52,086 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] [2021-11-05 12:30:52,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 12:30:52,087 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)] === [2021-11-05 12:30:52,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1277819386, now seen corresponding path program 1 times [2021-11-05 12:30:52,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:52,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861836750] [2021-11-05 12:30:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:52,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:53,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:53,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861836750] [2021-11-05 12:30:53,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861836750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:53,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:53,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:30:53,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306558135] [2021-11-05 12:30:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:53,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:30:53,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:30:53,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:30:53,016 INFO L87 Difference]: Start difference. First operand 465 states and 544 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) [2021-11-05 12:30:55,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:30:56,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:30:56,741 INFO L93 Difference]: Finished difference Result 1218 states and 1414 transitions. [2021-11-05 12:30:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:30:56,742 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 [2021-11-05 12:30:56,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:30:56,744 INFO L225 Difference]: With dead ends: 1218 [2021-11-05 12:30:56,744 INFO L226 Difference]: Without dead ends: 876 [2021-11-05 12:30:56,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 509.74ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:30:56,745 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 578 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3144.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.22ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3324.41ms IncrementalHoareTripleChecker+Time [2021-11-05 12:30:56,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1579 Invalid, 381 Unknown, 0 Unchecked, 5.22ms Time], IncrementalHoareTripleChecker [15 Valid, 365 Invalid, 1 Unknown, 0 Unchecked, 3324.41ms Time] [2021-11-05 12:30:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2021-11-05 12:30:56,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 479. [2021-11-05 12:30:56,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 460 states have (on average 1.2173913043478262) internal successors, (560), 478 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:30:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 560 transitions. [2021-11-05 12:30:56,756 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 560 transitions. Word has length 113 [2021-11-05 12:30:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:30:56,756 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 560 transitions. [2021-11-05 12:30:56,757 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) [2021-11-05 12:30:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 560 transitions. [2021-11-05 12:30:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:30:56,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:30:56,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:30:56,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 12:30:56,758 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)] === [2021-11-05 12:30:56,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:30:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash -2081003986, now seen corresponding path program 1 times [2021-11-05 12:30:56,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:30:56,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135168580] [2021-11-05 12:30:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:30:56,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:30:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:30:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:30:58,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:30:58,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135168580] [2021-11-05 12:30:58,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135168580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:30:58,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:30:58,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:30:58,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669084018] [2021-11-05 12:30:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:30:58,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:30:58,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:30:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:30:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:30:58,478 INFO L87 Difference]: Start difference. First operand 479 states and 560 transitions. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 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) [2021-11-05 12:31:00,522 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:02,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:04,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:06,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:08,872 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:10,968 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:13,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:15,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:20,297 INFO L93 Difference]: Finished difference Result 1219 states and 1417 transitions. [2021-11-05 12:31:20,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-05 12:31:20,298 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 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 [2021-11-05 12:31:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:20,300 INFO L225 Difference]: With dead ends: 1219 [2021-11-05 12:31:20,300 INFO L226 Difference]: Without dead ends: 944 [2021-11-05 12:31:20,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 2405.91ms TimeCoverageRelationStatistics Valid=271, Invalid=785, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:31:20,301 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 2529 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 92 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19095.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.85ms SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20037.02ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:20,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 2694 Invalid, 1255 Unknown, 0 Unchecked, 15.85ms Time], IncrementalHoareTripleChecker [92 Valid, 1155 Invalid, 8 Unknown, 0 Unchecked, 20037.02ms Time] [2021-11-05 12:31:20,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-05 12:31:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 665. [2021-11-05 12:31:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 646 states have (on average 1.2291021671826625) internal successors, (794), 664 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 794 transitions. [2021-11-05 12:31:20,320 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 794 transitions. Word has length 113 [2021-11-05 12:31:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:20,320 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 794 transitions. [2021-11-05 12:31:20,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 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) [2021-11-05 12:31:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 794 transitions. [2021-11-05 12:31:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-05 12:31:20,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:20,321 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] [2021-11-05 12:31:20,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 12:31:20,321 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)] === [2021-11-05 12:31:20,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:20,322 INFO L85 PathProgramCache]: Analyzing trace with hash -152731284, now seen corresponding path program 1 times [2021-11-05 12:31:20,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:20,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433254615] [2021-11-05 12:31:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:20,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:31:22,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:22,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433254615] [2021-11-05 12:31:22,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433254615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:22,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:22,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-05 12:31:22,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022619453] [2021-11-05 12:31:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:22,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-05 12:31:22,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-05 12:31:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:31:22,956 INFO L87 Difference]: Start difference. First operand 665 states and 794 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) [2021-11-05 12:31:25,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:27,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:29,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:31,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:33,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:35,537 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:37,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:39,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:41,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:31:55,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:31:55,607 INFO L93 Difference]: Finished difference Result 2057 states and 2400 transitions. [2021-11-05 12:31:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-05 12:31:55,609 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 [2021-11-05 12:31:55,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:31:55,613 INFO L225 Difference]: With dead ends: 2057 [2021-11-05 12:31:55,613 INFO L226 Difference]: Without dead ends: 1788 [2021-11-05 12:31:55,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 7921.35ms TimeCoverageRelationStatistics Valid=680, Invalid=2860, Unknown=0, NotChecked=0, Total=3540 [2021-11-05 12:31:55,616 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 5075 mSDsluCounter, 4144 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 193 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24208.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 4513 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.75ms SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25579.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:31:55,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 4513 Invalid, 2410 Unknown, 0 Unchecked, 30.75ms Time], IncrementalHoareTripleChecker [193 Valid, 2208 Invalid, 9 Unknown, 0 Unchecked, 25579.89ms Time] [2021-11-05 12:31:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2021-11-05 12:31:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 605. [2021-11-05 12:31:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 586 states have (on average 1.2320819112627985) internal successors, (722), 604 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:55,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 722 transitions. [2021-11-05 12:31:55,636 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 722 transitions. Word has length 113 [2021-11-05 12:31:55,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:31:55,637 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 722 transitions. [2021-11-05 12:31:55,637 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) [2021-11-05 12:31:55,637 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 722 transitions. [2021-11-05 12:31:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-05 12:31:55,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:31:55,638 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] [2021-11-05 12:31:55,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 12:31:55,638 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:31:55,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:31:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1369284272, now seen corresponding path program 1 times [2021-11-05 12:31:55,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:31:55,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453130631] [2021-11-05 12:31:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:31:55,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:31:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:31:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:31:56,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:31:56,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453130631] [2021-11-05 12:31:56,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453130631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:31:56,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:31:56,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:31:56,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131946217] [2021-11-05 12:31:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:31:56,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:31:56,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:31:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:31:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:31:56,764 INFO L87 Difference]: Start difference. First operand 605 states and 722 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:31:58,807 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:00,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:02,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:08,463 INFO L93 Difference]: Finished difference Result 1936 states and 2312 transitions. [2021-11-05 12:32:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:32:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-05 12:32:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:08,467 INFO L225 Difference]: With dead ends: 1936 [2021-11-05 12:32:08,467 INFO L226 Difference]: Without dead ends: 1770 [2021-11-05 12:32:08,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1867.39ms TimeCoverageRelationStatistics Valid=179, Invalid=751, Unknown=0, NotChecked=0, Total=930 [2021-11-05 12:32:08,469 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 1215 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 52 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9515.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.62ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10059.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:08,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 3513 Invalid, 1330 Unknown, 0 Unchecked, 15.62ms Time], IncrementalHoareTripleChecker [52 Valid, 1275 Invalid, 3 Unknown, 0 Unchecked, 10059.11ms Time] [2021-11-05 12:32:08,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-11-05 12:32:08,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 682. [2021-11-05 12:32:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 663 states have (on average 1.2217194570135748) internal successors, (810), 681 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:08,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 810 transitions. [2021-11-05 12:32:08,489 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 810 transitions. Word has length 114 [2021-11-05 12:32:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:08,489 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 810 transitions. [2021-11-05 12:32:08,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:08,489 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 810 transitions. [2021-11-05 12:32:08,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 12:32:08,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:08,490 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] [2021-11-05 12:32:08,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 12:32:08,490 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:32:08,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1356810702, now seen corresponding path program 1 times [2021-11-05 12:32:08,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:08,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175341442] [2021-11-05 12:32:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:08,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 12:32:09,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:09,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175341442] [2021-11-05 12:32:09,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175341442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:09,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:09,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:32:09,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667485801] [2021-11-05 12:32:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:09,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:32:09,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:09,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:32:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:32:09,341 INFO L87 Difference]: Start difference. First operand 682 states and 810 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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) [2021-11-05 12:32:11,384 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:12,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:12,703 INFO L93 Difference]: Finished difference Result 1583 states and 1864 transitions. [2021-11-05 12:32:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:32:12,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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 [2021-11-05 12:32:12,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:12,705 INFO L225 Difference]: With dead ends: 1583 [2021-11-05 12:32:12,705 INFO L226 Difference]: Without dead ends: 892 [2021-11-05 12:32:12,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.71ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:32:12,707 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 382 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3085.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.16ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3258.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:12,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 884 Invalid, 430 Unknown, 0 Unchecked, 4.16ms Time], IncrementalHoareTripleChecker [37 Valid, 392 Invalid, 1 Unknown, 0 Unchecked, 3258.70ms Time] [2021-11-05 12:32:12,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-05 12:32:12,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 652. [2021-11-05 12:32:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 633 states have (on average 1.187993680884676) internal successors, (752), 651 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 752 transitions. [2021-11-05 12:32:12,724 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 752 transitions. Word has length 116 [2021-11-05 12:32:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:12,724 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 752 transitions. [2021-11-05 12:32:12,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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) [2021-11-05 12:32:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 752 transitions. [2021-11-05 12:32:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-05 12:32:12,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:12,725 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] [2021-11-05 12:32:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 12:32:12,726 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:32:12,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2036869072, now seen corresponding path program 1 times [2021-11-05 12:32:12,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:12,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041010313] [2021-11-05 12:32:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:12,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:32:13,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:13,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041010313] [2021-11-05 12:32:14,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041010313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 12:32:14,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408665461] [2021-11-05 12:32:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:14,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:32:14,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:32:14,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:32:14,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 12:32:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:14,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3280 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-05 12:32:14,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:32:15,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-05 12:32:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-05 12:32:15,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:32:15,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408665461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:15,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 12:32:15,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-11-05 12:32:15,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121606456] [2021-11-05 12:32:15,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:15,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:32:15,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:32:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:32:15,861 INFO L87 Difference]: Start difference. First operand 652 states and 752 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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) [2021-11-05 12:32:17,907 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:19,802 INFO L93 Difference]: Finished difference Result 1311 states and 1508 transitions. [2021-11-05 12:32:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:32:19,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 [2021-11-05 12:32:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:19,804 INFO L225 Difference]: With dead ends: 1311 [2021-11-05 12:32:19,804 INFO L226 Difference]: Without dead ends: 688 [2021-11-05 12:32:19,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1343.91ms TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:32:19,805 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 588 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3158.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.73ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3364.70ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:19,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1633 Invalid, 418 Unknown, 0 Unchecked, 6.73ms Time], IncrementalHoareTripleChecker [22 Valid, 395 Invalid, 1 Unknown, 0 Unchecked, 3364.70ms Time] [2021-11-05 12:32:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-05 12:32:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 648. [2021-11-05 12:32:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 629 states have (on average 1.1875993640699523) internal successors, (747), 647 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 747 transitions. [2021-11-05 12:32:19,824 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 747 transitions. Word has length 116 [2021-11-05 12:32:19,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:19,824 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 747 transitions. [2021-11-05 12:32:19,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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) [2021-11-05 12:32:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 747 transitions. [2021-11-05 12:32:19,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:32:19,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:19,826 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] [2021-11-05 12:32:19,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-05 12:32:20,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-05 12:32:20,045 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:32:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:20,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1331151359, now seen corresponding path program 1 times [2021-11-05 12:32:20,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:20,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005798789] [2021-11-05 12:32:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:20,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:32:21,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:21,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005798789] [2021-11-05 12:32:21,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005798789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 12:32:21,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468391216] [2021-11-05 12:32:21,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:21,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:32:21,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:32:21,477 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:32:21,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 12:32:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-05 12:32:22,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:32:23,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-11-05 12:32:23,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-11-05 12:32:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:32:23,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:32:23,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468391216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:23,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 12:32:23,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2021-11-05 12:32:23,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530012489] [2021-11-05 12:32:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:23,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:32:23,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:23,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:32:23,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:32:23,755 INFO L87 Difference]: Start difference. First operand 648 states and 747 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 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) [2021-11-05 12:32:25,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:28,372 INFO L93 Difference]: Finished difference Result 1106 states and 1288 transitions. [2021-11-05 12:32:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 12:32:28,372 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 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 [2021-11-05 12:32:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:28,374 INFO L225 Difference]: With dead ends: 1106 [2021-11-05 12:32:28,374 INFO L226 Difference]: Without dead ends: 886 [2021-11-05 12:32:28,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2304.62ms TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2021-11-05 12:32:28,376 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 376 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3218.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.92ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3406.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:28,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 3551 Invalid, 429 Unknown, 0 Unchecked, 7.92ms Time], IncrementalHoareTripleChecker [9 Valid, 419 Invalid, 1 Unknown, 0 Unchecked, 3406.61ms Time] [2021-11-05 12:32:28,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-05 12:32:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 616. [2021-11-05 12:32:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 597 states have (on average 1.187604690117253) internal successors, (709), 615 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 709 transitions. [2021-11-05 12:32:28,393 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 709 transitions. Word has length 122 [2021-11-05 12:32:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:28,394 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 709 transitions. [2021-11-05 12:32:28,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 11 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) [2021-11-05 12:32:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 709 transitions. [2021-11-05 12:32:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:32:28,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:28,395 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] [2021-11-05 12:32:28,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-05 12:32:28,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-05 12:32:28,618 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)] === [2021-11-05 12:32:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 16376778, now seen corresponding path program 1 times [2021-11-05 12:32:28,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:28,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747465866] [2021-11-05 12:32:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:28,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:32:30,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:30,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747465866] [2021-11-05 12:32:30,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747465866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:30,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:30,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:32:30,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614517371] [2021-11-05 12:32:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:30,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:32:30,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:32:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:32:30,228 INFO L87 Difference]: Start difference. First operand 616 states and 709 transitions. Second operand has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 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) [2021-11-05 12:32:32,272 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:34,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:42,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:32:42,341 INFO L93 Difference]: Finished difference Result 2002 states and 2289 transitions. [2021-11-05 12:32:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 12:32:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 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 [2021-11-05 12:32:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:32:42,346 INFO L225 Difference]: With dead ends: 2002 [2021-11-05 12:32:42,346 INFO L226 Difference]: Without dead ends: 1705 [2021-11-05 12:32:42,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 3818.27ms TimeCoverageRelationStatistics Valid=584, Invalid=1672, Unknown=0, NotChecked=0, Total=2256 [2021-11-05 12:32:42,347 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 3442 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 110 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8309.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3442 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.13ms SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8825.17ms IncrementalHoareTripleChecker+Time [2021-11-05 12:32:42,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3442 Valid, 3389 Invalid, 1545 Unknown, 0 Unchecked, 23.13ms Time], IncrementalHoareTripleChecker [110 Valid, 1433 Invalid, 2 Unknown, 0 Unchecked, 8825.17ms Time] [2021-11-05 12:32:42,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2021-11-05 12:32:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 695. [2021-11-05 12:32:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 676 states have (on average 1.1760355029585798) internal successors, (795), 694 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:32:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 795 transitions. [2021-11-05 12:32:42,368 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 795 transitions. Word has length 122 [2021-11-05 12:32:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:32:42,368 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 795 transitions. [2021-11-05 12:32:42,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.625) internal successors, (122), 16 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) [2021-11-05 12:32:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 795 transitions. [2021-11-05 12:32:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:32:42,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:32:42,370 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] [2021-11-05 12:32:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 12:32:42,370 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)] === [2021-11-05 12:32:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:32:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1939604812, now seen corresponding path program 1 times [2021-11-05 12:32:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:32:42,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695148796] [2021-11-05 12:32:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:32:42,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:32:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:32:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:32:45,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:32:45,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695148796] [2021-11-05 12:32:45,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695148796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:32:45,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:32:45,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 12:32:45,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490507259] [2021-11-05 12:32:45,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:32:45,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 12:32:45,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:32:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 12:32:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:32:45,447 INFO L87 Difference]: Start difference. First operand 695 states and 795 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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) [2021-11-05 12:32:47,491 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:49,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:51,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:53,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:55,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:32:58,000 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:00,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:02,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:04,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:15,791 INFO L93 Difference]: Finished difference Result 1437 states and 1652 transitions. [2021-11-05 12:33:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-05 12:33:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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 [2021-11-05 12:33:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:15,794 INFO L225 Difference]: With dead ends: 1437 [2021-11-05 12:33:15,794 INFO L226 Difference]: Without dead ends: 1152 [2021-11-05 12:33:15,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 6480.29ms TimeCoverageRelationStatistics Valid=470, Invalid=1510, Unknown=0, NotChecked=0, Total=1980 [2021-11-05 12:33:15,795 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 2950 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 132 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23900.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 4483 SdHoareTripleChecker+Invalid, 2210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.82ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25212.04ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:15,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 4483 Invalid, 2210 Unknown, 0 Unchecked, 29.82ms Time], IncrementalHoareTripleChecker [132 Valid, 2069 Invalid, 9 Unknown, 0 Unchecked, 25212.04ms Time] [2021-11-05 12:33:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2021-11-05 12:33:15,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 720. [2021-11-05 12:33:15,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 701 states have (on average 1.174037089871612) internal successors, (823), 719 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 823 transitions. [2021-11-05 12:33:15,816 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 823 transitions. Word has length 122 [2021-11-05 12:33:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:15,816 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 823 transitions. [2021-11-05 12:33:15,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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) [2021-11-05 12:33:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 823 transitions. [2021-11-05 12:33:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:33:15,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:15,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:33:15,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 12:33:15,818 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)] === [2021-11-05 12:33:15,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:15,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1428388624, now seen corresponding path program 1 times [2021-11-05 12:33:15,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:15,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745222059] [2021-11-05 12:33:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:15,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:33:17,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:17,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745222059] [2021-11-05 12:33:17,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745222059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:17,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:17,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:33:17,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220271379] [2021-11-05 12:33:17,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:17,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:33:17,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:33:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:33:17,215 INFO L87 Difference]: Start difference. First operand 720 states and 823 transitions. Second operand has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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) [2021-11-05 12:33:19,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:21,373 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:23,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:25,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:33:30,538 INFO L93 Difference]: Finished difference Result 1648 states and 1907 transitions. [2021-11-05 12:33:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-05 12:33:30,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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 [2021-11-05 12:33:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:33:30,542 INFO L225 Difference]: With dead ends: 1648 [2021-11-05 12:33:30,542 INFO L226 Difference]: Without dead ends: 1408 [2021-11-05 12:33:30,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1728.89ms TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-11-05 12:33:30,543 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1154 mSDsluCounter, 2989 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11324.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.38ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11946.15ms IncrementalHoareTripleChecker+Time [2021-11-05 12:33:30,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3474 Invalid, 1287 Unknown, 0 Unchecked, 15.38ms Time], IncrementalHoareTripleChecker [51 Valid, 1232 Invalid, 4 Unknown, 0 Unchecked, 11946.15ms Time] [2021-11-05 12:33:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-11-05 12:33:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 730. [2021-11-05 12:33:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1744022503516174) internal successors, (835), 729 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:33:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 835 transitions. [2021-11-05 12:33:30,566 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 835 transitions. Word has length 122 [2021-11-05 12:33:30,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:33:30,566 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 835 transitions. [2021-11-05 12:33:30,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.384615384615385) internal successors, (122), 13 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) [2021-11-05 12:33:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 835 transitions. [2021-11-05 12:33:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:33:30,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:33:30,567 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] [2021-11-05 12:33:30,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 12:33:30,568 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)] === [2021-11-05 12:33:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:33:30,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1686554062, now seen corresponding path program 1 times [2021-11-05 12:33:30,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:33:30,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487495622] [2021-11-05 12:33:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:33:30,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:33:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:33:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:33:34,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:33:34,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487495622] [2021-11-05 12:33:34,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487495622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:33:34,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:33:34,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 12:33:34,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822133611] [2021-11-05 12:33:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:33:34,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 12:33:34,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:33:34,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 12:33:34,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:33:34,005 INFO L87 Difference]: Start difference. First operand 730 states and 835 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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) [2021-11-05 12:33:36,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:38,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:40,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:42,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:44,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:46,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:48,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:33:50,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:09,355 INFO L93 Difference]: Finished difference Result 1957 states and 2245 transitions. [2021-11-05 12:34:09,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-05 12:34:09,355 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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 [2021-11-05 12:34:09,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:09,359 INFO L225 Difference]: With dead ends: 1957 [2021-11-05 12:34:09,359 INFO L226 Difference]: Without dead ends: 1637 [2021-11-05 12:34:09,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 11103.28ms TimeCoverageRelationStatistics Valid=625, Invalid=2567, Unknown=0, NotChecked=0, Total=3192 [2021-11-05 12:34:09,361 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 3042 mSDsluCounter, 6146 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 155 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24140.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 6672 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.47ms SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25616.25ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:09,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 6672 Invalid, 2913 Unknown, 0 Unchecked, 35.47ms Time], IncrementalHoareTripleChecker [155 Valid, 2750 Invalid, 8 Unknown, 0 Unchecked, 25616.25ms Time] [2021-11-05 12:34:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-11-05 12:34:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 793. [2021-11-05 12:34:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 774 states have (on average 1.1705426356589148) internal successors, (906), 792 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 906 transitions. [2021-11-05 12:34:09,397 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 906 transitions. Word has length 122 [2021-11-05 12:34:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:09,397 INFO L470 AbstractCegarLoop]: Abstraction has 793 states and 906 transitions. [2021-11-05 12:34:09,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 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) [2021-11-05 12:34:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 906 transitions. [2021-11-05 12:34:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:34:09,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:09,398 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] [2021-11-05 12:34:09,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-05 12:34:09,398 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)] === [2021-11-05 12:34:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash -889637883, now seen corresponding path program 1 times [2021-11-05 12:34:09,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:09,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261721899] [2021-11-05 12:34:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:09,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:34:11,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:11,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261721899] [2021-11-05 12:34:11,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261721899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:11,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:11,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:34:11,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623533361] [2021-11-05 12:34:11,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:34:11,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:34:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:34:11,164 INFO L87 Difference]: Start difference. First operand 793 states and 906 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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) [2021-11-05 12:34:13,209 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:15,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:17,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:19,498 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:21,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:24,536 INFO L93 Difference]: Finished difference Result 1726 states and 1955 transitions. [2021-11-05 12:34:24,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:34:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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 [2021-11-05 12:34:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:24,540 INFO L225 Difference]: With dead ends: 1726 [2021-11-05 12:34:24,540 INFO L226 Difference]: Without dead ends: 1394 [2021-11-05 12:34:24,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1471.14ms TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-11-05 12:34:24,541 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 2598 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 122 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11783.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.18ms SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12421.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:24,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2598 Valid, 1790 Invalid, 670 Unknown, 0 Unchecked, 10.18ms Time], IncrementalHoareTripleChecker [122 Valid, 543 Invalid, 5 Unknown, 0 Unchecked, 12421.16ms Time] [2021-11-05 12:34:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-11-05 12:34:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 798. [2021-11-05 12:34:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 779 states have (on average 1.1694480102695763) internal successors, (911), 797 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 911 transitions. [2021-11-05 12:34:24,566 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 911 transitions. Word has length 122 [2021-11-05 12:34:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:24,566 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 911 transitions. [2021-11-05 12:34:24,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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) [2021-11-05 12:34:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 911 transitions. [2021-11-05 12:34:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-05 12:34:24,568 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:24,568 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] [2021-11-05 12:34:24,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 12:34:24,568 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)] === [2021-11-05 12:34:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1007342128, now seen corresponding path program 1 times [2021-11-05 12:34:24,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:24,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220983080] [2021-11-05 12:34:24,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:24,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:34:27,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:27,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220983080] [2021-11-05 12:34:27,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220983080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:27,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:27,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-05 12:34:27,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255144297] [2021-11-05 12:34:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:27,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-05 12:34:27,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-05 12:34:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:34:27,370 INFO L87 Difference]: Start difference. First operand 798 states and 911 transitions. Second operand has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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) [2021-11-05 12:34:29,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:31,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:33,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:35,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:37,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:39,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:45,163 INFO L93 Difference]: Finished difference Result 1427 states and 1623 transitions. [2021-11-05 12:34:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-05 12:34:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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 [2021-11-05 12:34:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:45,165 INFO L225 Difference]: With dead ends: 1427 [2021-11-05 12:34:45,165 INFO L226 Difference]: Without dead ends: 850 [2021-11-05 12:34:45,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 3208.53ms TimeCoverageRelationStatistics Valid=275, Invalid=985, Unknown=0, NotChecked=0, Total=1260 [2021-11-05 12:34:45,167 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 858 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 84 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14642.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.79ms SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15437.71ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:45,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 2288 Invalid, 1038 Unknown, 0 Unchecked, 12.79ms Time], IncrementalHoareTripleChecker [84 Valid, 948 Invalid, 6 Unknown, 0 Unchecked, 15437.71ms Time] [2021-11-05 12:34:45,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2021-11-05 12:34:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 730. [2021-11-05 12:34:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.1729957805907174) internal successors, (834), 729 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 834 transitions. [2021-11-05 12:34:45,189 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 834 transitions. Word has length 122 [2021-11-05 12:34:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:45,189 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 834 transitions. [2021-11-05 12:34:45,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 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) [2021-11-05 12:34:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 834 transitions. [2021-11-05 12:34:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:34:45,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:45,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:34:45,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 12:34:45,190 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)] === [2021-11-05 12:34:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1334389522, now seen corresponding path program 1 times [2021-11-05 12:34:45,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:45,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335910486] [2021-11-05 12:34:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:45,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:34:46,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:46,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335910486] [2021-11-05 12:34:46,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335910486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:46,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:46,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:34:46,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450077718] [2021-11-05 12:34:46,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:46,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:34:46,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:34:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:34:46,660 INFO L87 Difference]: Start difference. First operand 730 states and 834 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2021-11-05 12:34:48,708 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 [] [2021-11-05 12:34:50,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:34:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:34:54,086 INFO L93 Difference]: Finished difference Result 1776 states and 2046 transitions. [2021-11-05 12:34:54,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-05 12:34:54,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 [2021-11-05 12:34:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:34:54,090 INFO L225 Difference]: With dead ends: 1776 [2021-11-05 12:34:54,090 INFO L226 Difference]: Without dead ends: 1220 [2021-11-05 12:34:54,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1120.12ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:34:54,091 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 1933 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 90 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6197.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 2285 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.26ms SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6532.89ms IncrementalHoareTripleChecker+Time [2021-11-05 12:34:54,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1933 Valid, 2285 Invalid, 866 Unknown, 0 Unchecked, 12.26ms Time], IncrementalHoareTripleChecker [90 Valid, 774 Invalid, 2 Unknown, 0 Unchecked, 6532.89ms Time] [2021-11-05 12:34:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-05 12:34:54,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 730. [2021-11-05 12:34:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 711 states have (on average 1.170182841068917) internal successors, (832), 729 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:34:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 832 transitions. [2021-11-05 12:34:54,125 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 832 transitions. Word has length 125 [2021-11-05 12:34:54,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:34:54,125 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 832 transitions. [2021-11-05 12:34:54,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2021-11-05 12:34:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 832 transitions. [2021-11-05 12:34:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:34:54,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:34:54,126 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] [2021-11-05 12:34:54,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 12:34:54,126 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)] === [2021-11-05 12:34:54,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:34:54,127 INFO L85 PathProgramCache]: Analyzing trace with hash -804839302, now seen corresponding path program 1 times [2021-11-05 12:34:54,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:34:54,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113474375] [2021-11-05 12:34:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:34:54,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:34:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:34:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:34:56,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:34:56,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113474375] [2021-11-05 12:34:56,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113474375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:34:56,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:34:56,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-05 12:34:56,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616406579] [2021-11-05 12:34:56,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:34:56,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-05 12:34:56,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:34:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-05 12:34:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-11-05 12:34:56,711 INFO L87 Difference]: Start difference. First operand 730 states and 832 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 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) [2021-11-05 12:34:58,759 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 [] [2021-11-05 12:35:00,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:03,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:05,139 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:07,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:09,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:11,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:13,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:15,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:17,781 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:19,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:21,986 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:24,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:35:44,003 INFO L93 Difference]: Finished difference Result 1834 states and 2066 transitions. [2021-11-05 12:35:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-05 12:35:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 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 [2021-11-05 12:35:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:35:44,007 INFO L225 Difference]: With dead ends: 1834 [2021-11-05 12:35:44,007 INFO L226 Difference]: Without dead ends: 1502 [2021-11-05 12:35:44,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 12014.33ms TimeCoverageRelationStatistics Valid=922, Invalid=3368, Unknown=0, NotChecked=0, Total=4290 [2021-11-05 12:35:44,009 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 2820 mSDsluCounter, 5901 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 115 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34148.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.58ms SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36170.28ms IncrementalHoareTripleChecker+Time [2021-11-05 12:35:44,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 6406 Invalid, 2697 Unknown, 0 Unchecked, 38.58ms Time], IncrementalHoareTripleChecker [115 Valid, 2569 Invalid, 13 Unknown, 0 Unchecked, 36170.28ms Time] [2021-11-05 12:35:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-11-05 12:35:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 732. [2021-11-05 12:35:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 713 states have (on average 1.1697054698457223) internal successors, (834), 731 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 834 transitions. [2021-11-05 12:35:44,035 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 834 transitions. Word has length 125 [2021-11-05 12:35:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:35:44,035 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 834 transitions. [2021-11-05 12:35:44,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 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) [2021-11-05 12:35:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 834 transitions. [2021-11-05 12:35:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:35:44,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:35:44,036 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] [2021-11-05 12:35:44,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-05 12:35:44,036 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)] === [2021-11-05 12:35:44,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:35:44,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1579085436, now seen corresponding path program 1 times [2021-11-05 12:35:44,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:35:44,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288174383] [2021-11-05 12:35:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:35:44,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:35:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:35:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:35:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:35:45,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288174383] [2021-11-05 12:35:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288174383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:35:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:35:45,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:35:45,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420375731] [2021-11-05 12:35:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:35:45,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:35:45,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:35:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:35:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:35:45,615 INFO L87 Difference]: Start difference. First operand 732 states and 834 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:35:47,661 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:49,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:51,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:53,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:35:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:35:59,077 INFO L93 Difference]: Finished difference Result 1607 states and 1856 transitions. [2021-11-05 12:35:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-05 12:35:59,078 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 [2021-11-05 12:35:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:35:59,081 INFO L225 Difference]: With dead ends: 1607 [2021-11-05 12:35:59,081 INFO L226 Difference]: Without dead ends: 1390 [2021-11-05 12:35:59,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1894.28ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:35:59,083 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 1166 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 68 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11163.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.68ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11789.36ms IncrementalHoareTripleChecker+Time [2021-11-05 12:35:59,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 2975 Invalid, 1146 Unknown, 0 Unchecked, 13.68ms Time], IncrementalHoareTripleChecker [68 Valid, 1074 Invalid, 4 Unknown, 0 Unchecked, 11789.36ms Time] [2021-11-05 12:35:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-05 12:35:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 741. [2021-11-05 12:35:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 722 states have (on average 1.1689750692520775) internal successors, (844), 740 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:35:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 844 transitions. [2021-11-05 12:35:59,107 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 844 transitions. Word has length 125 [2021-11-05 12:35:59,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:35:59,107 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 844 transitions. [2021-11-05 12:35:59,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:35:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 844 transitions. [2021-11-05 12:35:59,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:35:59,108 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:35:59,108 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] [2021-11-05 12:35:59,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-05 12:35:59,108 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)] === [2021-11-05 12:35:59,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:35:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash 549726138, now seen corresponding path program 1 times [2021-11-05 12:35:59,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:35:59,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221480281] [2021-11-05 12:35:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:35:59,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:03,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:03,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221480281] [2021-11-05 12:36:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221480281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:03,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:03,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-05 12:36:03,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948306323] [2021-11-05 12:36:03,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:03,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-05 12:36:03,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-05 12:36:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-05 12:36:03,484 INFO L87 Difference]: Start difference. First operand 741 states and 844 transitions. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2021-11-05 12:36:05,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:07,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:09,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:13,383 INFO L93 Difference]: Finished difference Result 1230 states and 1410 transitions. [2021-11-05 12:36:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:36:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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 [2021-11-05 12:36:13,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:13,385 INFO L225 Difference]: With dead ends: 1230 [2021-11-05 12:36:13,386 INFO L226 Difference]: Without dead ends: 1068 [2021-11-05 12:36:13,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1644.84ms TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:36:13,386 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 2164 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 71 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8155.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.80ms SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8594.61ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:13,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 1561 Invalid, 798 Unknown, 0 Unchecked, 11.80ms Time], IncrementalHoareTripleChecker [71 Valid, 724 Invalid, 3 Unknown, 0 Unchecked, 8594.61ms Time] [2021-11-05 12:36:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-11-05 12:36:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 782. [2021-11-05 12:36:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1703800786369594) internal successors, (893), 781 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 893 transitions. [2021-11-05 12:36:13,415 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 893 transitions. Word has length 125 [2021-11-05 12:36:13,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:13,416 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 893 transitions. [2021-11-05 12:36:13,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 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) [2021-11-05 12:36:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 893 transitions. [2021-11-05 12:36:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:36:13,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:13,417 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] [2021-11-05 12:36:13,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-05 12:36:13,419 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)] === [2021-11-05 12:36:13,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash 807891576, now seen corresponding path program 1 times [2021-11-05 12:36:13,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:13,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616724961] [2021-11-05 12:36:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:13,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:14,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:14,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616724961] [2021-11-05 12:36:14,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616724961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:14,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:14,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:36:14,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725614596] [2021-11-05 12:36:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:14,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:36:14,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:36:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:36:14,641 INFO L87 Difference]: Start difference. First operand 782 states and 893 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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) [2021-11-05 12:36:16,689 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 [] [2021-11-05 12:36:18,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:20,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:22,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:26,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:26,933 INFO L93 Difference]: Finished difference Result 1262 states and 1438 transitions. [2021-11-05 12:36:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:36:26,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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 [2021-11-05 12:36:26,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:26,936 INFO L225 Difference]: With dead ends: 1262 [2021-11-05 12:36:26,936 INFO L226 Difference]: Without dead ends: 1109 [2021-11-05 12:36:26,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1335.20ms TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:36:26,937 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1103 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10590.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.34ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11146.32ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:26,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1733 Invalid, 923 Unknown, 0 Unchecked, 11.34ms Time], IncrementalHoareTripleChecker [57 Valid, 862 Invalid, 4 Unknown, 0 Unchecked, 11146.32ms Time] [2021-11-05 12:36:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-05 12:36:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 782. [2021-11-05 12:36:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 763 states have (on average 1.1690694626474443) internal successors, (892), 781 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 892 transitions. [2021-11-05 12:36:26,966 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 892 transitions. Word has length 125 [2021-11-05 12:36:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:26,966 INFO L470 AbstractCegarLoop]: Abstraction has 782 states and 892 transitions. [2021-11-05 12:36:26,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 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) [2021-11-05 12:36:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 892 transitions. [2021-11-05 12:36:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:36:26,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:26,967 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] [2021-11-05 12:36:26,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-05 12:36:26,967 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)] === [2021-11-05 12:36:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -883284044, now seen corresponding path program 1 times [2021-11-05 12:36:26,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:26,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765465565] [2021-11-05 12:36:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:26,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:28,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:28,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765465565] [2021-11-05 12:36:28,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765465565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:28,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:36:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54910327] [2021-11-05 12:36:28,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:36:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:36:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:36:28,489 INFO L87 Difference]: Start difference. First operand 782 states and 892 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:36:30,536 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 [] [2021-11-05 12:36:32,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:34,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:36,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:39,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:39,823 INFO L93 Difference]: Finished difference Result 1188 states and 1363 transitions. [2021-11-05 12:36:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:36:39,824 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 [2021-11-05 12:36:39,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:39,825 INFO L225 Difference]: With dead ends: 1188 [2021-11-05 12:36:39,825 INFO L226 Difference]: Without dead ends: 1040 [2021-11-05 12:36:39,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 713.85ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:36:39,826 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 740 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 37 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10284.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10819.11ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:39,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1887 Invalid, 787 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [37 Valid, 746 Invalid, 4 Unknown, 0 Unchecked, 10819.11ms Time] [2021-11-05 12:36:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-05 12:36:39,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 789. [2021-11-05 12:36:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1688311688311688) internal successors, (900), 788 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 900 transitions. [2021-11-05 12:36:39,856 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 900 transitions. Word has length 125 [2021-11-05 12:36:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:39,856 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 900 transitions. [2021-11-05 12:36:39,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:36:39,856 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 900 transitions. [2021-11-05 12:36:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:36:39,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:39,868 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] [2021-11-05 12:36:39,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-05 12:36:39,868 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)] === [2021-11-05 12:36:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -203225674, now seen corresponding path program 1 times [2021-11-05 12:36:39,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:39,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214542027] [2021-11-05 12:36:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:39,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:41,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:41,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214542027] [2021-11-05 12:36:41,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214542027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:41,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:41,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:36:41,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614859721] [2021-11-05 12:36:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:41,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:36:41,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:36:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:36:41,061 INFO L87 Difference]: Start difference. First operand 789 states and 900 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 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) [2021-11-05 12:36:43,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:36:44,239 INFO L93 Difference]: Finished difference Result 1205 states and 1386 transitions. [2021-11-05 12:36:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:36:44,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 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 [2021-11-05 12:36:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:36:44,241 INFO L225 Difference]: With dead ends: 1205 [2021-11-05 12:36:44,241 INFO L226 Difference]: Without dead ends: 969 [2021-11-05 12:36:44,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.59ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:36:44,242 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 508 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2917.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.21ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3093.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:36:44,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 992 Invalid, 338 Unknown, 0 Unchecked, 4.21ms Time], IncrementalHoareTripleChecker [45 Valid, 292 Invalid, 1 Unknown, 0 Unchecked, 3093.07ms Time] [2021-11-05 12:36:44,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2021-11-05 12:36:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 789. [2021-11-05 12:36:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1597402597402597) internal successors, (893), 788 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:36:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 893 transitions. [2021-11-05 12:36:44,269 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 893 transitions. Word has length 125 [2021-11-05 12:36:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:36:44,269 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 893 transitions. [2021-11-05 12:36:44,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 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) [2021-11-05 12:36:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 893 transitions. [2021-11-05 12:36:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:36:44,270 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:36:44,271 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] [2021-11-05 12:36:44,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-05 12:36:44,271 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)] === [2021-11-05 12:36:44,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:36:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash 563107244, now seen corresponding path program 1 times [2021-11-05 12:36:44,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:36:44,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428632936] [2021-11-05 12:36:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:36:44,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:36:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:36:47,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:36:47,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:36:47,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428632936] [2021-11-05 12:36:47,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428632936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:36:47,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:36:47,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-05 12:36:47,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674952956] [2021-11-05 12:36:47,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:36:47,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-05 12:36:47,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:36:47,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-05 12:36:47,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-05 12:36:47,137 INFO L87 Difference]: Start difference. First operand 789 states and 893 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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) [2021-11-05 12:36:49,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:51,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:53,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:55,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:57,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:36:59,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:01,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:03,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:18,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:18,210 INFO L93 Difference]: Finished difference Result 2211 states and 2469 transitions. [2021-11-05 12:37:18,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-05 12:37:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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 [2021-11-05 12:37:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:18,213 INFO L225 Difference]: With dead ends: 2211 [2021-11-05 12:37:18,214 INFO L226 Difference]: Without dead ends: 1910 [2021-11-05 12:37:18,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 7420.27ms TimeCoverageRelationStatistics Valid=975, Invalid=4427, Unknown=0, NotChecked=0, Total=5402 [2021-11-05 12:37:18,216 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 4359 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 193 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23170.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 5102 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.31ms SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24493.01ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:18,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4359 Valid, 5102 Invalid, 2805 Unknown, 0 Unchecked, 35.31ms Time], IncrementalHoareTripleChecker [193 Valid, 2604 Invalid, 8 Unknown, 0 Unchecked, 24493.01ms Time] [2021-11-05 12:37:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2021-11-05 12:37:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 789. [2021-11-05 12:37:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 770 states have (on average 1.1584415584415584) internal successors, (892), 788 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 892 transitions. [2021-11-05 12:37:18,247 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 892 transitions. Word has length 125 [2021-11-05 12:37:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:18,247 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 892 transitions. [2021-11-05 12:37:18,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 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) [2021-11-05 12:37:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 892 transitions. [2021-11-05 12:37:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:37:18,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:18,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:18,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-05 12:37:18,248 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)] === [2021-11-05 12:37:18,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1808632018, now seen corresponding path program 1 times [2021-11-05 12:37:18,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:18,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106338269] [2021-11-05 12:37:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:18,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:19,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:19,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106338269] [2021-11-05 12:37:19,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106338269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:19,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:37:19,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323008323] [2021-11-05 12:37:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:37:19,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:37:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:19,692 INFO L87 Difference]: Start difference. First operand 789 states and 892 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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) [2021-11-05 12:37:21,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:23,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:25,944 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:28,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:31,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:31,639 INFO L93 Difference]: Finished difference Result 1614 states and 1815 transitions. [2021-11-05 12:37:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:37:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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 [2021-11-05 12:37:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:31,641 INFO L225 Difference]: With dead ends: 1614 [2021-11-05 12:37:31,641 INFO L226 Difference]: Without dead ends: 1259 [2021-11-05 12:37:31,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1214.54ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-05 12:37:31,642 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 815 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10263.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10844.97ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:31,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1728 Invalid, 891 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 4 Unknown, 0 Unchecked, 10844.97ms Time] [2021-11-05 12:37:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-11-05 12:37:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 844. [2021-11-05 12:37:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 825 states have (on average 1.153939393939394) internal successors, (952), 843 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 952 transitions. [2021-11-05 12:37:31,671 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 952 transitions. Word has length 125 [2021-11-05 12:37:31,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:31,671 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 952 transitions. [2021-11-05 12:37:31,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 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) [2021-11-05 12:37:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 952 transitions. [2021-11-05 12:37:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-05 12:37:31,672 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:31,673 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] [2021-11-05 12:37:31,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-05 12:37:31,673 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)] === [2021-11-05 12:37:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2061682768, now seen corresponding path program 1 times [2021-11-05 12:37:31,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:31,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138389900] [2021-11-05 12:37:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:31,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:36,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:36,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138389900] [2021-11-05 12:37:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138389900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:36,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:37:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596049432] [2021-11-05 12:37:36,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:37:36,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:37:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:37:36,367 INFO L87 Difference]: Start difference. First operand 844 states and 952 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:37:38,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:40,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:42,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:44,711 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:46,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:48,543 INFO L93 Difference]: Finished difference Result 1436 states and 1620 transitions. [2021-11-05 12:37:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:37:48,544 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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 [2021-11-05 12:37:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:48,545 INFO L225 Difference]: With dead ends: 1436 [2021-11-05 12:37:48,545 INFO L226 Difference]: Without dead ends: 906 [2021-11-05 12:37:48,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1019.72ms TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:37:48,546 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 882 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10899.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.00ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11475.45ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:48,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1492 Invalid, 339 Unknown, 0 Unchecked, 5.00ms Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 5 Unknown, 0 Unchecked, 11475.45ms Time] [2021-11-05 12:37:48,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-11-05 12:37:48,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 825. [2021-11-05 12:37:48,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 806 states have (on average 1.1550868486352357) internal successors, (931), 824 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:48,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 931 transitions. [2021-11-05 12:37:48,572 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 931 transitions. Word has length 125 [2021-11-05 12:37:48,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:48,572 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 931 transitions. [2021-11-05 12:37:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 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) [2021-11-05 12:37:48,572 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 931 transitions. [2021-11-05 12:37:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-05 12:37:48,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:48,573 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] [2021-11-05 12:37:48,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-05 12:37:48,573 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:37:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -656934112, now seen corresponding path program 1 times [2021-11-05 12:37:48,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:48,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44685259] [2021-11-05 12:37:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:48,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:48,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:48,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44685259] [2021-11-05 12:37:48,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44685259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:48,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:48,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:37:48,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221161299] [2021-11-05 12:37:48,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:48,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:37:48,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:37:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:37:48,804 INFO L87 Difference]: Start difference. First operand 825 states and 931 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:48,926 INFO L93 Difference]: Finished difference Result 1087 states and 1225 transitions. [2021-11-05 12:37:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:37:48,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-05 12:37:48,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:48,928 INFO L225 Difference]: With dead ends: 1087 [2021-11-05 12:37:48,928 INFO L226 Difference]: Without dead ends: 923 [2021-11-05 12:37:48,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 91.44ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:37:48,929 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 201 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.77ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:48,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 1349 Invalid, 16 Unknown, 0 Unchecked, 0.77ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 45.00ms Time] [2021-11-05 12:37:48,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-05 12:37:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 812. [2021-11-05 12:37:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 793 states have (on average 1.146279949558638) internal successors, (909), 811 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 909 transitions. [2021-11-05 12:37:48,958 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 909 transitions. Word has length 126 [2021-11-05 12:37:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:48,958 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 909 transitions. [2021-11-05 12:37:48,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 5 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 909 transitions. [2021-11-05 12:37:48,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 12:37:48,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:48,959 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] [2021-11-05 12:37:48,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-05 12:37:48,959 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:37:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:48,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1112159657, now seen corresponding path program 1 times [2021-11-05 12:37:48,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:48,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071995616] [2021-11-05 12:37:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:48,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:49,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:49,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071995616] [2021-11-05 12:37:49,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071995616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:49,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:49,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:37:49,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809658758] [2021-11-05 12:37:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:49,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:37:49,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:37:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:49,409 INFO L87 Difference]: Start difference. First operand 812 states and 909 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:49,890 INFO L93 Difference]: Finished difference Result 877 states and 984 transitions. [2021-11-05 12:37:49,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:37:49,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-05 12:37:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:49,892 INFO L225 Difference]: With dead ends: 877 [2021-11-05 12:37:49,892 INFO L226 Difference]: Without dead ends: 875 [2021-11-05 12:37:49,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 257.61ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:37:49,892 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1179 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 295.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.40ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 316.73ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:49,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 941 Invalid, 120 Unknown, 0 Unchecked, 2.40ms Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 316.73ms Time] [2021-11-05 12:37:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2021-11-05 12:37:49,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 810. [2021-11-05 12:37:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 792 states have (on average 1.143939393939394) internal successors, (906), 809 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 906 transitions. [2021-11-05 12:37:49,919 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 906 transitions. Word has length 127 [2021-11-05 12:37:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:49,919 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 906 transitions. [2021-11-05 12:37:49,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 906 transitions. [2021-11-05 12:37:49,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 12:37:49,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:49,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 12:37:49,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-05 12:37:49,920 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)] === [2021-11-05 12:37:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1610310257, now seen corresponding path program 1 times [2021-11-05 12:37:49,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:49,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194397903] [2021-11-05 12:37:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:49,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:50,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:50,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194397903] [2021-11-05 12:37:50,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194397903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:50,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:50,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:37:50,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752160145] [2021-11-05 12:37:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:50,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:37:50,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:37:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:50,347 INFO L87 Difference]: Start difference. First operand 810 states and 906 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:52,139 INFO L93 Difference]: Finished difference Result 1171 states and 1304 transitions. [2021-11-05 12:37:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:37:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-05 12:37:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:52,141 INFO L225 Difference]: With dead ends: 1171 [2021-11-05 12:37:52,141 INFO L226 Difference]: Without dead ends: 1163 [2021-11-05 12:37:52,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 487.67ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-05 12:37:52,141 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 414 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1268.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.71ms SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1349.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:52,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 1778 Invalid, 657 Unknown, 0 Unchecked, 6.71ms Time], IncrementalHoareTripleChecker [154 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 1349.52ms Time] [2021-11-05 12:37:52,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-11-05 12:37:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 822. [2021-11-05 12:37:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 804 states have (on average 1.1417910447761195) internal successors, (918), 821 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 918 transitions. [2021-11-05 12:37:52,172 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 918 transitions. Word has length 127 [2021-11-05 12:37:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:52,172 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 918 transitions. [2021-11-05 12:37:52,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 918 transitions. [2021-11-05 12:37:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-05 12:37:52,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:52,173 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, 1, 1] [2021-11-05 12:37:52,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-05 12:37:52,173 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)] === [2021-11-05 12:37:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1875310413, now seen corresponding path program 1 times [2021-11-05 12:37:52,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:52,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837355526] [2021-11-05 12:37:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:52,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:37:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:37:53,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:37:53,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:37:53,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837355526] [2021-11-05 12:37:53,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837355526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:37:53,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:37:53,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:37:53,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393892802] [2021-11-05 12:37:53,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:37:53,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:37:53,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:37:53,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:37:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:37:53,768 INFO L87 Difference]: Start difference. First operand 822 states and 918 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:55,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:57,918 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:37:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:37:59,737 INFO L93 Difference]: Finished difference Result 1253 states and 1393 transitions. [2021-11-05 12:37:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:37:59,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-05 12:37:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:37:59,740 INFO L225 Difference]: With dead ends: 1253 [2021-11-05 12:37:59,740 INFO L226 Difference]: Without dead ends: 1128 [2021-11-05 12:37:59,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 476.68ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:37:59,740 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 897 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5323.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.91ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5623.96ms IncrementalHoareTripleChecker+Time [2021-11-05 12:37:59,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1318 Invalid, 529 Unknown, 0 Unchecked, 5.91ms Time], IncrementalHoareTripleChecker [40 Valid, 487 Invalid, 2 Unknown, 0 Unchecked, 5623.96ms Time] [2021-11-05 12:37:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1128 states. [2021-11-05 12:37:59,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1128 to 823. [2021-11-05 12:37:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 805 states have (on average 1.141614906832298) internal successors, (919), 822 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) [2021-11-05 12:37:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 919 transitions. [2021-11-05 12:37:59,773 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 919 transitions. Word has length 127 [2021-11-05 12:37:59,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:37:59,774 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 919 transitions. [2021-11-05 12:37:59,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:37:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 919 transitions. [2021-11-05 12:37:59,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-05 12:37:59,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:37:59,775 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] [2021-11-05 12:37:59,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-05 12:37:59,775 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:37:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:37:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash -661280949, now seen corresponding path program 1 times [2021-11-05 12:37:59,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:37:59,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043831772] [2021-11-05 12:37:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:37:59,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:06,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:06,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043831772] [2021-11-05 12:38:06,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043831772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:06,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:06,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-05 12:38:06,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723464365] [2021-11-05 12:38:06,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:06,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-05 12:38:06,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:06,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-05 12:38:06,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-05 12:38:06,152 INFO L87 Difference]: Start difference. First operand 823 states and 919 transitions. Second operand has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:08,196 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:10,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:12,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:14,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:16,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:18,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:20,832 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:22,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:25,032 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:27,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:29,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:31,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:33,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:45,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:45,229 INFO L93 Difference]: Finished difference Result 1592 states and 1766 transitions. [2021-11-05 12:38:45,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:38:45,229 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-05 12:38:45,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:45,231 INFO L225 Difference]: With dead ends: 1592 [2021-11-05 12:38:45,232 INFO L226 Difference]: Without dead ends: 1590 [2021-11-05 12:38:45,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 6082.86ms TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2021-11-05 12:38:45,232 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 3605 mSDsluCounter, 4226 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 135 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32713.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3605 SdHoareTripleChecker+Valid, 4554 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.66ms SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34486.90ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:45,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3605 Valid, 4554 Invalid, 2326 Unknown, 0 Unchecked, 33.66ms Time], IncrementalHoareTripleChecker [135 Valid, 2178 Invalid, 13 Unknown, 0 Unchecked, 34486.90ms Time] [2021-11-05 12:38:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-05 12:38:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1023. [2021-11-05 12:38:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.137313432835821) internal successors, (1143), 1022 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1143 transitions. [2021-11-05 12:38:45,271 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1143 transitions. Word has length 129 [2021-11-05 12:38:45,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:45,271 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1143 transitions. [2021-11-05 12:38:45,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 23 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:45,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1143 transitions. [2021-11-05 12:38:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:38:45,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:45,273 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] [2021-11-05 12:38:45,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-05 12:38:45,273 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:38:45,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:45,273 INFO L85 PathProgramCache]: Analyzing trace with hash 536932685, now seen corresponding path program 1 times [2021-11-05 12:38:45,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:45,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266320477] [2021-11-05 12:38:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:45,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:38:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:38:46,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:38:46,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266320477] [2021-11-05 12:38:46,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266320477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:38:46,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:38:46,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:38:46,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130311358] [2021-11-05 12:38:46,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:38:46,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:38:46,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:38:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:38:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:38:46,998 INFO L87 Difference]: Start difference. First operand 1023 states and 1143 transitions. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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) [2021-11-05 12:38:49,047 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:51,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:38:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:38:54,091 INFO L93 Difference]: Finished difference Result 1981 states and 2236 transitions. [2021-11-05 12:38:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:38:54,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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 [2021-11-05 12:38:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:38:54,094 INFO L225 Difference]: With dead ends: 1981 [2021-11-05 12:38:54,094 INFO L226 Difference]: Without dead ends: 1728 [2021-11-05 12:38:54,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 772.22ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:38:54,095 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 728 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6082.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 2349 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.15ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6425.64ms IncrementalHoareTripleChecker+Time [2021-11-05 12:38:54,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 2349 Invalid, 740 Unknown, 0 Unchecked, 10.15ms Time], IncrementalHoareTripleChecker [39 Valid, 699 Invalid, 2 Unknown, 0 Unchecked, 6425.64ms Time] [2021-11-05 12:38:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-05 12:38:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1021. [2021-11-05 12:38:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 1003 states have (on average 1.1375872382851446) internal successors, (1141), 1020 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:38:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1141 transitions. [2021-11-05 12:38:54,134 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1141 transitions. Word has length 131 [2021-11-05 12:38:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:38:54,135 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1141 transitions. [2021-11-05 12:38:54,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 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) [2021-11-05 12:38:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1141 transitions. [2021-11-05 12:38:54,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:38:54,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:38:54,136 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] [2021-11-05 12:38:54,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-05 12:38:54,136 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:38:54,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:38:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash 164313485, now seen corresponding path program 1 times [2021-11-05 12:38:54,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:38:54,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550080255] [2021-11-05 12:38:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:38:54,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:38:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:39:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:39:04,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:39:04,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550080255] [2021-11-05 12:39:04,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550080255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:39:04,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:39:04,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-05 12:39:04,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436368928] [2021-11-05 12:39:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:39:04,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-05 12:39:04,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:39:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-05 12:39:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-11-05 12:39:04,214 INFO L87 Difference]: Start difference. First operand 1021 states and 1141 transitions. Second operand has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 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) [2021-11-05 12:39:06,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:08,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:10,443 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:12,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:14,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:16,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:18,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:20,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:23,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:39:25,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:02,483 INFO L93 Difference]: Finished difference Result 2248 states and 2488 transitions. [2021-11-05 12:40:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-05 12:40:02,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 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 [2021-11-05 12:40:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:02,487 INFO L225 Difference]: With dead ends: 2248 [2021-11-05 12:40:02,487 INFO L226 Difference]: Without dead ends: 2133 [2021-11-05 12:40:02,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3463 ImplicationChecksByTransitivity, 32800.80ms TimeCoverageRelationStatistics Valid=1501, Invalid=9629, Unknown=0, NotChecked=0, Total=11130 [2021-11-05 12:40:02,490 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 3758 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 2167 mSolverCounterSat, 389 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26379.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3758 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.90ms SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2167 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27804.12ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:02,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3758 Valid, 5883 Invalid, 2566 Unknown, 0 Unchecked, 34.90ms Time], IncrementalHoareTripleChecker [389 Valid, 2167 Invalid, 10 Unknown, 0 Unchecked, 27804.12ms Time] [2021-11-05 12:40:02,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-05 12:40:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 1226. [2021-11-05 12:40:02,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1208 states have (on average 1.1357615894039734) internal successors, (1372), 1225 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1372 transitions. [2021-11-05 12:40:02,547 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1372 transitions. Word has length 131 [2021-11-05 12:40:02,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:02,548 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1372 transitions. [2021-11-05 12:40:02,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.851851851851852) internal successors, (131), 27 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) [2021-11-05 12:40:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1372 transitions. [2021-11-05 12:40:02,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:40:02,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:02,549 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] [2021-11-05 12:40:02,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-05 12:40:02,550 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:40:02,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1512455157, now seen corresponding path program 1 times [2021-11-05 12:40:02,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:02,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992264161] [2021-11-05 12:40:02,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:02,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:10,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:10,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992264161] [2021-11-05 12:40:10,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992264161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:10,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:40:10,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631711596] [2021-11-05 12:40:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:10,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:40:10,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:40:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:40:10,021 INFO L87 Difference]: Start difference. First operand 1226 states and 1372 transitions. Second operand has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 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) [2021-11-05 12:40:12,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:14,152 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:16,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:18,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:22,469 INFO L93 Difference]: Finished difference Result 1591 states and 1775 transitions. [2021-11-05 12:40:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:40:22,470 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 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 [2021-11-05 12:40:22,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:22,471 INFO L225 Difference]: With dead ends: 1591 [2021-11-05 12:40:22,471 INFO L226 Difference]: Without dead ends: 967 [2021-11-05 12:40:22,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2707.87ms TimeCoverageRelationStatistics Valid=276, Invalid=780, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:40:22,472 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 1018 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 75 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9675.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.13ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10234.57ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:22,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 1772 Invalid, 634 Unknown, 0 Unchecked, 10.13ms Time], IncrementalHoareTripleChecker [75 Valid, 555 Invalid, 4 Unknown, 0 Unchecked, 10234.57ms Time] [2021-11-05 12:40:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2021-11-05 12:40:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 913. [2021-11-05 12:40:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.1430167597765364) internal successors, (1023), 912 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1023 transitions. [2021-11-05 12:40:22,510 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1023 transitions. Word has length 131 [2021-11-05 12:40:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1023 transitions. [2021-11-05 12:40:22,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.357142857142858) internal successors, (131), 14 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) [2021-11-05 12:40:22,510 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1023 transitions. [2021-11-05 12:40:22,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:40:22,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:22,511 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] [2021-11-05 12:40:22,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-05 12:40:22,512 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:40:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:22,512 INFO L85 PathProgramCache]: Analyzing trace with hash 283881935, now seen corresponding path program 1 times [2021-11-05 12:40:22,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:22,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200401004] [2021-11-05 12:40:22,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:22,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:24,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:24,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200401004] [2021-11-05 12:40:24,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200401004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:24,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:24,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-05 12:40:24,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906139272] [2021-11-05 12:40:24,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:24,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-05 12:40:24,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-05 12:40:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:40:24,874 INFO L87 Difference]: Start difference. First operand 913 states and 1023 transitions. Second operand has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2021-11-05 12:40:26,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:29,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:31,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:33,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:35,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:40:42,188 INFO L93 Difference]: Finished difference Result 1560 states and 1747 transitions. [2021-11-05 12:40:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-05 12:40:42,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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 [2021-11-05 12:40:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:40:42,191 INFO L225 Difference]: With dead ends: 1560 [2021-11-05 12:40:42,191 INFO L226 Difference]: Without dead ends: 1357 [2021-11-05 12:40:42,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2541.73ms TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2021-11-05 12:40:42,192 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 770 mSDsluCounter, 2606 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 72 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14326.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.00ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15141.91ms IncrementalHoareTripleChecker+Time [2021-11-05 12:40:42,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 3004 Invalid, 1614 Unknown, 0 Unchecked, 18.00ms Time], IncrementalHoareTripleChecker [72 Valid, 1537 Invalid, 5 Unknown, 0 Unchecked, 15141.91ms Time] [2021-11-05 12:40:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-11-05 12:40:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 913. [2021-11-05 12:40:42,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 895 states have (on average 1.140782122905028) internal successors, (1021), 912 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:40:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1021 transitions. [2021-11-05 12:40:42,231 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1021 transitions. Word has length 131 [2021-11-05 12:40:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:40:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1021 transitions. [2021-11-05 12:40:42,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.916666666666666) internal successors, (131), 12 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) [2021-11-05 12:40:42,231 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1021 transitions. [2021-11-05 12:40:42,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:40:42,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:40:42,232 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] [2021-11-05 12:40:42,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-05 12:40:42,232 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:40:42,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:40:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2087857327, now seen corresponding path program 1 times [2021-11-05 12:40:42,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:40:42,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390715375] [2021-11-05 12:40:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:40:42,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:40:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:40:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:40:45,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:40:45,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390715375] [2021-11-05 12:40:45,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390715375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:40:45,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:40:45,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-05 12:40:45,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696766886] [2021-11-05 12:40:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:40:45,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-05 12:40:45,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:40:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-05 12:40:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-05 12:40:45,564 INFO L87 Difference]: Start difference. First operand 913 states and 1021 transitions. Second operand has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 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) [2021-11-05 12:40:47,608 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:49,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:51,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:53,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:56,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:40:58,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:00,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:02,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:04,420 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:15,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:15,261 INFO L93 Difference]: Finished difference Result 1636 states and 1817 transitions. [2021-11-05 12:41:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-05 12:41:15,261 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 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 [2021-11-05 12:41:15,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:15,263 INFO L225 Difference]: With dead ends: 1636 [2021-11-05 12:41:15,264 INFO L226 Difference]: Without dead ends: 1431 [2021-11-05 12:41:15,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 5538.46ms TimeCoverageRelationStatistics Valid=517, Invalid=1835, Unknown=0, NotChecked=0, Total=2352 [2021-11-05 12:41:15,265 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 1691 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 109 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23954.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.95ms SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25258.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:15,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 4163 Invalid, 2129 Unknown, 0 Unchecked, 24.95ms Time], IncrementalHoareTripleChecker [109 Valid, 2011 Invalid, 9 Unknown, 0 Unchecked, 25258.74ms Time] [2021-11-05 12:41:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2021-11-05 12:41:15,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 883. [2021-11-05 12:41:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 865 states have (on average 1.1433526011560693) internal successors, (989), 882 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 989 transitions. [2021-11-05 12:41:15,307 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 989 transitions. Word has length 131 [2021-11-05 12:41:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:15,307 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 989 transitions. [2021-11-05 12:41:15,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.954545454545454) internal successors, (131), 22 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) [2021-11-05 12:41:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 989 transitions. [2021-11-05 12:41:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-05 12:41:15,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:15,308 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] [2021-11-05 12:41:15,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-05 12:41:15,309 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:41:15,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1587871297, now seen corresponding path program 1 times [2021-11-05 12:41:15,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:15,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640430324] [2021-11-05 12:41:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:15,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:19,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:19,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640430324] [2021-11-05 12:41:19,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640430324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:19,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:19,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-05 12:41:19,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009982269] [2021-11-05 12:41:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:19,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-05 12:41:19,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:19,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-05 12:41:19,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-05 12:41:19,944 INFO L87 Difference]: Start difference. First operand 883 states and 989 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 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) [2021-11-05 12:41:21,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:24,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:26,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:28,346 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:30,458 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:32,561 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:34,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:37,348 INFO L93 Difference]: Finished difference Result 1254 states and 1410 transitions. [2021-11-05 12:41:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-05 12:41:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 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 [2021-11-05 12:41:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:37,350 INFO L225 Difference]: With dead ends: 1254 [2021-11-05 12:41:37,350 INFO L226 Difference]: Without dead ends: 948 [2021-11-05 12:41:37,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1412.24ms TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2021-11-05 12:41:37,351 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1153 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 70 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15500.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.05ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16398.58ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:37,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1984 Invalid, 593 Unknown, 0 Unchecked, 9.05ms Time], IncrementalHoareTripleChecker [70 Valid, 516 Invalid, 7 Unknown, 0 Unchecked, 16398.58ms Time] [2021-11-05 12:41:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-11-05 12:41:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 813. [2021-11-05 12:41:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 795 states have (on average 1.1484276729559748) internal successors, (913), 812 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 913 transitions. [2021-11-05 12:41:37,389 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 913 transitions. Word has length 131 [2021-11-05 12:41:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:37,389 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 913 transitions. [2021-11-05 12:41:37,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 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) [2021-11-05 12:41:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 913 transitions. [2021-11-05 12:41:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:41:37,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:37,390 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, 1, 1, 1] [2021-11-05 12:41:37,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-05 12:41:37,391 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:41:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash -280841822, now seen corresponding path program 1 times [2021-11-05 12:41:37,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:37,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140882504] [2021-11-05 12:41:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:37,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:39,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:39,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140882504] [2021-11-05 12:41:39,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140882504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:39,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:39,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:41:39,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653617463] [2021-11-05 12:41:39,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:39,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:41:39,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:39,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:41:39,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:41:39,528 INFO L87 Difference]: Start difference. First operand 813 states and 913 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:41,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:43,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:45,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:41:56,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:41:56,611 INFO L93 Difference]: Finished difference Result 2003 states and 2246 transitions. [2021-11-05 12:41:56,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-05 12:41:56,611 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 12:41:56,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:41:56,614 INFO L225 Difference]: With dead ends: 2003 [2021-11-05 12:41:56,614 INFO L226 Difference]: Without dead ends: 1779 [2021-11-05 12:41:56,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1360 ImplicationChecksByTransitivity, 4392.06ms TimeCoverageRelationStatistics Valid=723, Invalid=3567, Unknown=0, NotChecked=0, Total=4290 [2021-11-05 12:41:56,615 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 1330 mSDsluCounter, 3769 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 82 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12176.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 2297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.62ms SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12897.50ms IncrementalHoareTripleChecker+Time [2021-11-05 12:41:56,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 4297 Invalid, 2297 Unknown, 0 Unchecked, 27.62ms Time], IncrementalHoareTripleChecker [82 Valid, 2212 Invalid, 3 Unknown, 0 Unchecked, 12897.50ms Time] [2021-11-05 12:41:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-05 12:41:56,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 870. [2021-11-05 12:41:56,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 852 states have (on average 1.1490610328638498) internal successors, (979), 869 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 979 transitions. [2021-11-05 12:41:56,658 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 979 transitions. Word has length 137 [2021-11-05 12:41:56,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:41:56,658 INFO L470 AbstractCegarLoop]: Abstraction has 870 states and 979 transitions. [2021-11-05 12:41:56,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:41:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 979 transitions. [2021-11-05 12:41:56,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:41:56,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:41:56,659 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, 1, 1, 1] [2021-11-05 12:41:56,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-05 12:41:56,660 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:41:56,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:41:56,660 INFO L85 PathProgramCache]: Analyzing trace with hash -22676384, now seen corresponding path program 1 times [2021-11-05 12:41:56,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:41:56,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857142053] [2021-11-05 12:41:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:41:56,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:41:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:41:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:41:58,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:41:58,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857142053] [2021-11-05 12:41:58,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857142053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:41:58,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:41:58,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-05 12:41:58,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480553851] [2021-11-05 12:41:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:41:58,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-05 12:41:58,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:41:58,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-05 12:41:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:41:58,891 INFO L87 Difference]: Start difference. First operand 870 states and 979 transitions. Second operand has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:00,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:03,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:05,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:07,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:09,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:11,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:13,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:17,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:17,228 INFO L93 Difference]: Finished difference Result 1433 states and 1599 transitions. [2021-11-05 12:42:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-05 12:42:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 12:42:17,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:17,240 INFO L225 Difference]: With dead ends: 1433 [2021-11-05 12:42:17,240 INFO L226 Difference]: Without dead ends: 1092 [2021-11-05 12:42:17,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1662.25ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-11-05 12:42:17,243 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1388 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 65 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16310.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.37ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17168.52ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:17,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 2084 Invalid, 819 Unknown, 0 Unchecked, 11.37ms Time], IncrementalHoareTripleChecker [65 Valid, 747 Invalid, 7 Unknown, 0 Unchecked, 17168.52ms Time] [2021-11-05 12:42:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2021-11-05 12:42:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 871. [2021-11-05 12:42:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 853 states have (on average 1.145369284876905) internal successors, (977), 870 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 977 transitions. [2021-11-05 12:42:17,303 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 977 transitions. Word has length 137 [2021-11-05 12:42:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:17,304 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 977 transitions. [2021-11-05 12:42:17,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5625) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 977 transitions. [2021-11-05 12:42:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:42:17,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:17,306 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, 1, 1, 1] [2021-11-05 12:42:17,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-05 12:42:17,306 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:42:17,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1718278240, now seen corresponding path program 1 times [2021-11-05 12:42:17,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:17,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230958253] [2021-11-05 12:42:17,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:17,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:19,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:19,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230958253] [2021-11-05 12:42:19,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230958253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:19,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:19,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:42:19,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411166370] [2021-11-05 12:42:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:19,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:42:19,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:42:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:42:19,235 INFO L87 Difference]: Start difference. First operand 871 states and 977 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:21,318 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 [] [2021-11-05 12:42:23,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:25,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:29,390 INFO L93 Difference]: Finished difference Result 2058 states and 2317 transitions. [2021-11-05 12:42:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:42:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 12:42:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:29,393 INFO L225 Difference]: With dead ends: 2058 [2021-11-05 12:42:29,393 INFO L226 Difference]: Without dead ends: 1670 [2021-11-05 12:42:29,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 799.13ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:42:29,393 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 770 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8925.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.58ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9422.25ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:29,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2902 Invalid, 1058 Unknown, 0 Unchecked, 12.58ms Time], IncrementalHoareTripleChecker [33 Valid, 1022 Invalid, 3 Unknown, 0 Unchecked, 9422.25ms Time] [2021-11-05 12:42:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1670 states. [2021-11-05 12:42:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1670 to 1038. [2021-11-05 12:42:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 1020 states have (on average 1.1313725490196078) internal successors, (1154), 1037 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1154 transitions. [2021-11-05 12:42:29,458 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1154 transitions. Word has length 137 [2021-11-05 12:42:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:29,459 INFO L470 AbstractCegarLoop]: Abstraction has 1038 states and 1154 transitions. [2021-11-05 12:42:29,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1154 transitions. [2021-11-05 12:42:29,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:42:29,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:29,460 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, 1, 1, 1] [2021-11-05 12:42:29,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-05 12:42:29,460 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:42:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:29,461 INFO L85 PathProgramCache]: Analyzing trace with hash 299675036, now seen corresponding path program 1 times [2021-11-05 12:42:29,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:29,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222350790] [2021-11-05 12:42:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:29,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:30,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:30,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222350790] [2021-11-05 12:42:30,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222350790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:30,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:30,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:42:30,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794541412] [2021-11-05 12:42:30,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:30,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:42:30,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:42:30,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:42:30,995 INFO L87 Difference]: Start difference. First operand 1038 states and 1154 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:33,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:35,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:37,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:37,658 INFO L93 Difference]: Finished difference Result 1507 states and 1686 transitions. [2021-11-05 12:42:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-05 12:42:37,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 12:42:37,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:37,660 INFO L225 Difference]: With dead ends: 1507 [2021-11-05 12:42:37,660 INFO L226 Difference]: Without dead ends: 1376 [2021-11-05 12:42:37,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 429.15ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:42:37,661 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 616 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5923.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.74ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6268.72ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:37,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1915 Invalid, 638 Unknown, 0 Unchecked, 8.74ms Time], IncrementalHoareTripleChecker [19 Valid, 617 Invalid, 2 Unknown, 0 Unchecked, 6268.72ms Time] [2021-11-05 12:42:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-05 12:42:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1084. [2021-11-05 12:42:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 1066 states have (on average 1.1360225140712945) internal successors, (1211), 1083 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1211 transitions. [2021-11-05 12:42:37,721 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1211 transitions. Word has length 137 [2021-11-05 12:42:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:37,722 INFO L470 AbstractCegarLoop]: Abstraction has 1084 states and 1211 transitions. [2021-11-05 12:42:37,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1211 transitions. [2021-11-05 12:42:37,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:42:37,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:37,723 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, 1, 1, 1] [2021-11-05 12:42:37,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-05 12:42:37,723 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:42:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1391500584, now seen corresponding path program 1 times [2021-11-05 12:42:37,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:37,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655880011] [2021-11-05 12:42:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:37,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:39,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:39,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655880011] [2021-11-05 12:42:39,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655880011] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:39,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:39,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:42:39,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987606350] [2021-11-05 12:42:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:39,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:42:39,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:39,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:42:39,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:42:39,707 INFO L87 Difference]: Start difference. First operand 1084 states and 1211 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:41,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:43,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:45,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:48,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:42:48,763 INFO L93 Difference]: Finished difference Result 1500 states and 1676 transitions. [2021-11-05 12:42:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-05 12:42:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-11-05 12:42:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:42:48,765 INFO L225 Difference]: With dead ends: 1500 [2021-11-05 12:42:48,765 INFO L226 Difference]: Without dead ends: 1376 [2021-11-05 12:42:48,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 567.72ms TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:42:48,766 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 626 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 33 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8091.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.51ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8555.51ms IncrementalHoareTripleChecker+Time [2021-11-05 12:42:48,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2180 Invalid, 760 Unknown, 0 Unchecked, 9.51ms Time], IncrementalHoareTripleChecker [33 Valid, 724 Invalid, 3 Unknown, 0 Unchecked, 8555.51ms Time] [2021-11-05 12:42:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2021-11-05 12:42:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1091. [2021-11-05 12:42:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1073 states have (on average 1.135135135135135) internal successors, (1218), 1090 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1218 transitions. [2021-11-05 12:42:48,815 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1218 transitions. Word has length 137 [2021-11-05 12:42:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:42:48,815 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1218 transitions. [2021-11-05 12:42:48,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 9 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:48,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1218 transitions. [2021-11-05 12:42:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-05 12:42:48,816 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:42:48,817 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, 1, 1, 1] [2021-11-05 12:42:48,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-05 12:42:48,817 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 12:42:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:42:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2072064226, now seen corresponding path program 1 times [2021-11-05 12:42:48,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:42:48,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120774189] [2021-11-05 12:42:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:42:48,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:42:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:42:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:42:52,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:42:52,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120774189] [2021-11-05 12:42:52,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120774189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:42:52,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:42:52,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-05 12:42:52,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862551143] [2021-11-05 12:42:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:42:52,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-05 12:42:52,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:42:52,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-05 12:42:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-05 12:42:52,104 INFO L87 Difference]: Start difference. First operand 1091 states and 1218 transitions. Second operand has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 12:42:54,153 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 [] [2021-11-05 12:42:56,276 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:42:58,388 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:00,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:43:02,604 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15